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20 of the best one-piece triathlon suits tested, rated and reviewed to help you go faster in your next tri event

Tenn Outdoors TriadTenn Outdoors Triad 
£50
tenn-outdoors.co.uk

Tenn is new to the triathlon market and we’ll admit some initial scepticism regarding its £50 suit, but we were bowled over by its performance. Comfy flatlock seams are complemented by a quality pad, the likes of which are normally reserved for much more expensive attire. It’s perforated to help with water shedding after the swim and comes in a female-specific version in Tenn’s Trinity suit. Long rides are a pleasure, and it doesn’t feel like you’ve got a cereal box shoved down your shorts on the run. The rest of the suit is standard fare, though excellent for the price. The two rear pockets are a little tight for bigger gels but don’t drag too badly in water. The zip has a comfort backing but could do with being a little longer for better ventilation, especially considering the lack of mesh panels, which means things get a little hotter than in suits made from more technical materials.

Verdict
A quality pad and great price make this a top beginner suit

Performance 3/5
Value 4/5
Overall 4/5

B’Twin Tri SuitB’Twin Tri Suit
£50
decathlon.co.uk

Decathlon’s tri suit makes you wonder how any brand can justify a pricetag two or three times higher when this has almost everything nailed. The fit is a little more relaxed than other brands but the B’Twin is smooth in the swim, luxurious on the bike – thanks to an Ironman-friendly gel pad as good as any we’ve tested – and supportive without over-compression on the run, where laser-cut legs and flatlock seams aid comfort. The rear pocket has a simple slit for access that stretches open once on, making it next to useless for carrying gels, and the narrow collar won’t be to everyone’s preference, but it covers the neck’s sunburn danger area well. Moisture transfer isn’t up there with the best suits, but the long front zip and mesh areas work fine to stop things getting uncomfortably steamy.

Verdict
A stunning piece of kit, especially considering the bargain price

Performance 4/5
Value 5/5
Overall 4/5

Speedo LZR Racer Tri CompSpeedo LZR Racer Tri Comp
£75
store.speedo.co.uk

Speedo’s offering is instantly comfortable whether swimming, cycling or running. The armholes have a larger scoop on the rear than most, which frees up your shoulder blades and makes it a real pleasure to swim in. The smooth pad has no contour lines but features varying thicknesses and is a perfectly nice platform to be perched upon even during long rides. The material is stretchy and supportive so it doesn’t restrict movement in any of the disciplines, while the open back allows free arm movement when running. Ventilation is good thanks to the front zip, and the material wicks well too. We can’t see the point of the elastic utility loops, though – they’re fiddly to secure gels in, which then bounce irritatingly anyway.

Verdict
A decent suit that does everything well and has great upper body freedom

Performance 3/5
Value 4/5
Overall 4/5

Zone3 AquafloZone3 Aquaflo
£85
racezone3.com; wiggle.co.uk

Zone3 has utilised a hydrophobic coating on its suit to help it glide through the water – an environment where the Aquaflo feels comfortable and smooth despite the two slim pockets (each big enough for one gel) not being enveloped. Stippled UFO grippers keep the legs in place, but the folded elasticated seams on the armholes are a little thick and less comfortable than on other suits. The bike pad isn’t the most forgiving out there, the edges being a little rougher than others, but we didn’t have any problems on Olympic-distance rides. Flatlock stitching means no irritation on the run and while the material isn’t the best at heat transfer, the Aquaflo’s spine-length ventilation strip and front zip help to avoid excess toastiness.

Verdict
A good suit that now has serious competition at this pricepoint

Performance 3/5
Value 3/5
Overall 3/5

2XU Women’s Comp With Rear Zip2XU Women’s Comp With Rear Zip
£99
2XUshop.co.uk

This simple women’s suit from 2XU has mesh panelling on the sides for cooling and really comfortable elastic hems on the legs. The two narrow pockets on the back are each big enough to hold one gel securely. There’s no tassel on the rear zip, so once it’s done up, that’s it for the event. The design is free from some of the girly embellishments of other suits but there’s no crop top included and no internal support either. Performance is good in the water but the basic fleece pad means anything over sprint distance on the bike is a pain in the backside. Running is chafe-free thanks to the flatlock seams and stretchy, supportive fabric.

Verdict
A well-featured suit, but the basic pad limits its long-course potential

Performance 3/5
Value 3/5
Overall 3/5

Blueseventy Women’s TX2000Blueseventy Women’s TX2000
£100
blueseventy.co.uk

This mid-range women’s suit from Blueseventy is light and close fitting but has no internal support. The simple design means no noticeable drag in the water and it dries quickly too. The suit is comfortable, with no niggling seams and leg grippers that hold without being irritating. We’ve no gripes with the pad either, which is springy and comfy, giving just the right coverage without being too bulky on the run. Despite the heat-reflecting Coldblack finish, the suit isn’t as airy as others out there, having no mesh panels, though the comfort-backed front zip offers some relief. The enveloped back pockets are placed at each side for easy access but lack the depth to store taller gels without bulging annoyingly.

Verdict
A good suit from one of triathlon’s original brands

Performance 3/5
Value 3/5
Overall 3/5

Scott FastsuitScott Fastsuit
£100
scott-sports.com

Scott’s suit features a supportive rather than compressive fit, with laser-cut leg- and armholes to banish chafing and keep things incredibly comfortable. The ultra-thin Revolutional fabric is cut into a body-hugging shape that moves effortlessly with every movement in each discipline. There are no pockets and only a short zip on the back – which is a bit of a pain to use – so the suit is best suited to shorter distances. Glossy black material stretches across the abdomen and is woven with carbon fibre for better heat regulation. It seems to work, as the suit wicks away moisture quickly. The pad is soft but fairly insubstantial – this makes it great for running, but you’ll need a well-padded saddle if you want to use it for long days out on the bike.

Verdict
Supremely comfortable material makes the Scott a blinder for short-course racing

Performance 4/5
Value 4/5
Overall 4/5

Sugoi RSSugoi RS
£100
sugoi.com

Fitting like a second skin, the RS is supportive yet unrestrictive and flexible in all three disciplines, with flatlock seams and wafer-thin, smooth fabric ensuring comfort. There’s no sense of drag while swimming and once out, it sheds water very quickly. It also has a great pad that’s light, soft, just padded enough for long rides and far from cumbersome on the run. Ventilation is good thanks to the fast-wicking fabric, large mesh panel on the back and decent-length zip, though there’s no flap to prevent nicks. The ends of the legs have a laser-cut finish and silicone grippers that eliminate any riding up. These were tight initially but loosened after a few rides. There are two enveloped pockets on the back with room for two gels each so this suit has long-course run potential too.

Verdict
A brilliant suit that excels in all three disciplines

Performance 5/5
Value 5/5
Overall 5/5

Huub Women’s Tri SuitHuub Women’s Tri Suit
£100
huubdesign.com

The warp-knit fabric of Huub’s first women’s suit allows easy movement during the swim, bike and run legs. Extra support is provided by a built-in crop top that doesn’t chafe even after salt-water swims. The suit is hardly a swimskin, but a hydrophobic coating helps it glide through the water and even sizeable mesh areas don’t make it feel slow. The pad is generous enough for middle-distance riding but takes a while to break in while running. The crop top is supportive enough for runs of up to 30 minutes with no sports bra and has a half zip, which is useful for cooling. The suit stayed cool throughout testing, with the mesh back/hamstring panels keeping things ventilated and the Coldblack treatment reflecting the sun. There are enveloped gel pockets on each side.

Verdict
A top contender for female triathletes

Performance 4/5
Value 4/5
Overall 4/5

Zoot Ultra Tri RacesuitZoot Ultra Tri Racesuit
£110
zootsports.com

This suit from Zoot features the brand’s trademark comfy rounded seams and comes with integrated chest support on the women’s version plus a front zip for ventilation and Coldblack treatment for UV protection. In the water it feels non-restrictive but not especially speed-enhancing. The short legs aren’t the most flattering for female athletes and some testers complained of saddle rub. The pad is still in the triathlon dark ages – a simple fleece number with a tiny bit of extra padding – and we struggled to stay comfortable on rides over 25 miles. Sizing is quite generous, with the women’s suit in particular cut for curvier hips. Four small pockets on the back will hold stockier gels such as PowerBar, but longer sachets have a tendency to make bids for freedom.

Verdict
A good suit that feels a bit out of date, plus short legs are a problem for ladies

Performance 3/5
Value 2/5
Overall 2/5

Rocket Science Rocket RacerRocket Science Rocket Racer
£111
rocketsciencesports.co.uk

Made from close fitting but stretchy hydrophobic material, this suit is really light and it feels cool and smooth. Dimpled panels on the laser-cut legs add extra compression and are also designed to aid aero/hydrodynamics but were a little too tight initially. The patent-pending Vortex panels on the back of the suit are said to reduce drag by six per cent – we can’t verify that but it feels fast in the water, with no rubbing or movement of material. There’s alchemy going on with the pad too, which is insubstantial but really comfortable. The zipped rear pocket will hold three gels at a pinch. The women’s version doesn’t come with built-in support or a crop top, so factor one into your budget. An ITU-legal version with a rear zip is available for another £17.

Verdict
A great-performing suit with a comfy pad, full of techie features

Performance 4/5
Value 4/5
Overall 4/5

Sailfish Trisuit CompSailfish Trisuit Comp
£120
sailfish.com

The Comp is made from a smooth and snug Lycra material that doesn’t rub, bunch or chafe but supports the muscles and moves easily. It’s really speedy in the pool, and water flies off it once you’re out. The pad has a fairly large footprint but is quite thin, giving good coverage and surprising comfort; we’d happily race middle-distance with it. It’s also perforated to help with drainage. The Lycra starts to heat up pretty quickly once gunning it on the bike or run, but the long, flapped zip and mesh panels help to keep things from getting uncomfortably sweaty. Two mesh pockets on the rear, and another two on the legs, mean no more storing gels up your shorts. The women’s version comes with a white crop top that’s supportive but can be a little revealing after swimming.

Verdict
A decent suit with thoughtful design that we liked more and more as testing went on

Performance 4/5
Value 3/5
Overall 4/5

4Distance TriSuit4Distance TriSuit
£125
4distance.co.uk

Comfortable from first fitting, the lower half of this British-made suit features a carbon yarn that helps regulate heat and reduce odours. The compressive fit supports and stretches with every movement. Silicone grippers hold the legs in place, while flatlock seams – and the lack of any seams at all on the inside of the legs – help to avoid chafing. 4D’s smooth custom pad is great on the bike, with extra padding right where you need it for perching on the end of a tri saddle. The suit’s upper is made from a really thin material that wicks sweat in a heartbeat and the long, but un-backed, zip keeps things cool. The shoulders are quite wide and were tight at first but seemed to ease out once running. There’s loads of gel storage, with two rear pockets and one on each thigh. Be careful when sizing – our small was more like a medium from most brands.

Verdict
A great suit from Great Britain that should be on your wardrobe wishlist

Performance 4/5
Value 3/5
Overall 4/5

O2 Creation Elite EnduranceO2 Creation Elite Endurance
£125
o2creation.co.uk

This tight-fitting suit is made from a really thin, stretchy fabric that’s treated with Coldblack to reflect heat on hot days. The ends of the legs are folded and heat-bonded for a tidy finish that stays put without any silicone. The thin shoulder straps dig in a bit during swimming, but once out of the water, the suit drains quickly. The pad is small and thin but comfy enough for Olympic-distance rides and has drainage holes so you don’t have to cycle with a wet bum. The suit’s material seems to store more heat than others at this price and with no mesh panels, things do get a bit steamy during hard sessions, though some temperature regulation can be achieved via the flapped front zip. There’s a pair of decent-sized rear pockets and we found we could squeeze two gels in each pocket without them bouncing out on the run. Unless you like a super-close ‘pro’ fit, we’d recommend sizing up.

Verdict
A good suit with a well-designed pad, but not as airy as others

Performance 3/5
Value 3/5
Overall 3/5

Aqua Sphere EnergizeAqua Sphere Energize
£130
aquasphereswim.com

This reverse-zipped racing suit from swim specialists Aqua Sphere is almost like a swimskin. Made from the company’s own chlorine-resistant Dynamix fabric, it slashes through the water, the only thing holding it back in the pool being the narrow, tight shoulder straps. Moisture drains seriously fast in transition but the basic pad is a bit underwhelming at this price, doing the absolute minimum to cushion you on the bike. The rear zipped pocket ensures nutrition stays safe but is a bit fiddly, while the legs stay in place across all disciplines thanks to silicone bands. Things really heat up once your heart rate rises, though, and with no mesh and no way of pulling the zip down mid-race without fashioning yourself a tassel, it’s not the most practical of suits.

Verdict
A good swimming suit but needs to do more to be a triathlon contender

Performance 2/5
Value 2/5
Overall 2/5

Z3R0D oSUITZ3R0D oSUIT
£135
z3r0d.com

Used for years by top ITU pros, Z3R0D is now British Triathlon’s official kit sponsor so you’ll see this suit on the GB team this year. Designed for serious speed over short courses, this ITU-legal suit has no pockets to harm hydrodynamics, while flatlock seams keep it smooth and comfy. The water-repelling Water Wear Weapon fabric is staggeringly good during the swim and has a second-skin feel that lets you forget all about it once the klaxon sounds. The reversed rear zip has an elasticated pullcord for easy access, though wicking is superb anyway. The back of the women’s version is open like a swimsuit and there’s no support built in. The pad is the most comfy of any short-course type we tested and will get you through Olympic-distance races. It’s unnoticeable during the run, where the supportive fabric keeps your muscles in check.

Verdict
Remains one of the best short-course suits out there

Performance 5/5
Value 3/5
Overall 4/5

Castelli Free Tri Distance SuitCastelli Free Tri Distance Suit
£140
castellicafe.co.uk; saddleback.co.uk

Castelli’s usual attention to detail is present and correct in this suit. Laser-cut leg- and armholes with wide, gentle grippers ensure chafe-free long-ride comfort. The substantial pad features varying thicknesses but is completely smooth, so there are no contours to pinch when in the saddle. The suit’s all-day credentials are boosted by an entirely mesh back which keeps things cool and dry, and also features two generous pockets. The front is cut from a thin, hydrophobic material that feels fast in the water and doesn’t flap on the bike, while the front zip is welcome on the run, where the large pad is the only slight compromise. As with most Italian kit, Castelli’s sizing is on the small side, with large equating to a close-fitting medium from other brands.

Verdict
A great long-distance suit with comfort and ventilation top of the agenda

Performance 4/5
Value 3/5
Overall 4/5

Orca RS1 Hydro Killa FemaleOrca RS1 Hydro Killa Female
£149
orca.com

No pockets, no zips and a basic fleece chamois signal that this is Orca’s entry into short-course speed weaponry. The suit is designed to minimise drag and uses Orca’s hydrophobic KillaSkn material, which still sees off water after an hour’s swimming. It feels particularly fast in the pool and is one of the speediest on test in terms of drying time too. The suit is stretchy and supportive in all three disciplines, the long inseam being both comfortable and flattering while also eliminating saddle rub. Heat regulation is brilliant, with the suit wicking before becoming noticeably warm. The pad is only suitable for short races though.

Verdict
Pro-level performance, but pricey

Performance 5/5
Value 2/5
Overall 4/5

Louis Garneau Tri Elite Course SuitLouis Garneau Tri Elite Course Suit
£160
louisgarneau.com; evanscycles.com

Louis Garneau kit is always luxurious and this is no exception. Swimming performance is great, with no obvious drag or restriction, but it’s the pad that really shines, with a perfect balance of thickness, comfort and unobtrusiveness on the run. The laser-cut legs feel smooth and unrestrictive, combining with the lack of seams on the inside leg to give the suit a ‘forget it’s there’ fit. The upper is free from chest-cramping tightness and micro perforations in the fabric wick sweat well. Add in a generous 38cm zip with a skin-protecting flap, and a sun-reflecting Coldblack finish, and it’s a great suit for hotter days. There’s one enveloped pocket on the back that keeps a couple of gels secure.

Verdict
A sublimely comfortable suit for all distances but with a top-end pricetag

Performance 5/5
Value 3/5
Overall 4/5

Pearl Izumi W’s PRO Tri Sprint Suit

Pearl Izumi W’s PRO Tri Sprint Suit
£160
pearlizumi.com; madison.co.uk

Pearl Izumi has removed all potential barriers to speed on this suit designed for furiously fast sprint- and Olympic-distance racing. Seams are few and flatlocked on the inside to minimise drag, and there are no pockets. The water-repellent, chlorine-resistant and UV-protective PRO Transfer Aquazero fabric is stretchy and close-fitting without bunching. This all adds up to a really fast pool swim, though the shoulder bands are a little tight. Water drains quickly and the slim, comfy pad dries out in no time. The beaded tassel on the off-centre rear zip irritates by flicking around on the bike to dangle at the side, but running performance is superb, the lightweight fabric keeping things cool and dry. A brilliant crop top comes with the suit; it supports really well and stays opaque when wet.

Verdict
A quality suit but pricey, though the crop top helps the value

Performance 4/5
Value 3/5
Overall 3/5

Best Tri Suits Review

OVERALL VERDICT

We were surprised at how far entry-level suits have come this year – in fact, labelling them as such does them a disservice. The Tenn Outdoors Triad is incredibly good value and has a seriously comfortable bike pad, but it’s the B’Twin Tri Suit’s high spec and low price that earn it our Top Value award.

At the other end of the spectrum are a host of suits that the pros would – and do – happily race in. The Orca RS1 Hydro Killa is simply superb, especially in the water, but the benchmark remains the Z3R0D oSUIT, which does everything you need and nothing you don’t, making it the worthy winner of our Peak Performer award.

The overall winner was even harder to pick, with Rocket Science, Castelli and Huub all making the shortlist. Honourable mentions go to Louis Garneau for its spectacular – but pricey – suit and B’Twin for its amazing pad, but for its uncompromising performance, second-skin comfort and amazing value, the Sugoi RS wins our Gold Award.