Men’s ARK Utö™ 2025
Sold out in your men’s size? No worries! The women’s version offers a very similar fit—just choose one size up from your usual men’s size and you’ll be good to go.
Our most innovative race suit to date, developed in close collaboration with the world’s leading swimrun athletes. Now refined with better pockets and more durable leg construction. The less insulated UTÖ™ is made for warm to cool climates, offering our best engineered functionality- to-weight ratio. At only 485 grams—and our most flexible Running++ bottoms—most fast athletes opt for UTÖ™.
It’s our least constricting suit, for unyielding crawlers and accomplished sprinters looking to push the boundaries—and former speed records.
TECHNOLOGIES
Premium Yamamoto LIMESTONE Neoprene
Super smooth, durable and insulating material, beating any other option on the market. Holds up over time, without brittle cracks that risk letting water in.
Anti-leak Construction
A second skin that completely seals out any cold water trying to seep through the material and down your neck or arms.
GlideSkin Coating
Designed to decrease friction, making you smoother and faster in the water.
Shaping Power Fabric with Water-Repellent Coating
Thin yet highly functional compression materials that contribute to low weight, high performance and no constrictions.
FOAM+ Master Buoyancy Belt
A lightweight option helping your core with some extra flotation, necessary to retain speed and energy when swimming with trail running shoes.
Running++ Bottoms
Our game-changing, stretchy bottoms—evolved. Made with a shaping power fabric and water repellent coating, for race courses where full sprint is the only way to get ahead.
UltraFlex Inner Liner
Prevents chafing and provides pleasant freedom of movement instead of constricting your thigh muscles when fighting lactic acid on the last sprint to the finish line.
Smooth Neck/Collar with Pressed Edge
Keeps chafing to an absolute minimum, while improving the durability of the suit as a whole. Comes in handy for the runner that likes cabbing down on longer trail sections.
Back Pocket with Flap Closure
Increased space to store race essentials such as gels and nutrition to boost speed and power throughout the race.
Separate Arm Sleeves Included
A brilliant layering option for extra warmth in cold conditions—and extra ventilation for longer running sections.
Weight: 485 g (men’s size M)
Size guide
| Weight Height | 60 kg | 65 kg | 70 kg | 75 kg | 78 kg | 81 kg | 84 kg | 87 kg | 90 kg | 95 kg | 100+ kg |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 160 cm | XS | XS | XS | XS | S | S | S | S | M | M | L |
| 165 cm | XS | XS | XS | S | S | S | S | M | M | M | L |
| 170 cm | XS | S | S | S | S | S | S | M | M | L | L |
| 175 cm | S | S | S | S | S | S | M | M | M | L | L |
| 178 cm | S | S | S | S | S | S | M | M | M | L | L |
| 181 cm | ST | ST | ST | ST | ST | M | M | M | L | L | L |
| 184 cm | ST | ST | ST | ST | ST | MT | MT | MT | L | XL | XL |
| 187 cm | ST | MT | MT | MT | MT | MT | MT | L | L | XL | XL |
| 190 cm | MT | MT | MT | MT | MT | MT | MT | L | L | XL | XL |
| 193 cm | MT | MT | MT | MT | MT | MT | L | L | XL | XL | XL |
| 196+ cm | MT | MT | MT | MT | MT | MT | XL | XL | XL | XL | XL |
ST = Small/Tall
MT = Medium/Tall
Please note:
The size chart is just a guide. Since the fit is most individual you should try the suit. Our suits are flexible, if you are between two sizes we recommend you to take the smaller size.