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The fastest wetsuit ever.

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Our fastest swimskin ever.

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The fastest wetsuit ever.

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Wind-tunnel-tested.
Real-world-proven.

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The most popular swimskins in Kona.

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Train smarter. Swim faster.

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Maximum forward visibility in open water.

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THE OUTLET

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Men's Viper X2 Swimskin - Short Sleeve
Men's Viper X2 Swimskin - Short Sleeve
Men's Viper X2 Swimskin - Short Sleeve
Men's Viper X2 Swimskin - Short Sleeve

Men's Viper X2 Swimskin - Short Sleeve

$225 - $285 $425
Size: Extra Small

ALL OUTLET ITEMS: We accept exchanges or returns for store credit, but outlet items are not eligible for a refund. Our standard warranty still applies.

Size Chart Size Chart

MEN'S Viper X2 Short Sleeve Swimskin

Meet the reimagined, better-than-ever Viper X2 Short Sleeve Swimskin, and wave goodbye to drag.

We weren’t satisfied with just creating the fastest, most popular swimskin on the planet, so we went back to the drawing board and upped our game. The result is the Viper X2, a swimskin that keeps everything you loved about the original—our patented ARMS UP™ technology, patented IXI taping, silicone leg grippers—and adds a new compression zone in the lower back that provides improved core support, promotes better posture and reduces drag by eliminating bubbling of the fabric in the small of your back.

The Viper X2 Short Sleeve is USAT and IRONMAN legal, and it fully covers your short sleeve tri suit on the swim to reduce friction and drag in the water. The suit is built with a premium Italian stretch-woven fabric and includes a hydrophobic Teflon coating, high-tech bonded seam construction with hidden-stitch reinforcement, as well as a low profile auto-locking YKK zipper.

Side Graphics Detail
Core Compression Detail

FRONT

01

ARMS UP™ SHORT-SLEEVE CONSTRUCTION

Our revolutionary patented ARMS UP™ technology eliminates restriction allowing you to swim faster and more efficiently.

02

Specialized gusset pattern through armpit

Enhances mobility and greatly reduced irritation throughout the swim.

03

Floating neck Suspension

Increases mobility and prevents chafing on the neck.

04

ITALIAN-WOVEN TEXTILE

Bonded with a high-tech seam construction and novel hidden stitch reinforcement.

05

SILICONE LEG GRIPPER

Printed silicone leg grippers on the inside of the leg opening for a straight seam cut and no sausage leg.

Side Arm Graphics Detail
Back Graphics Detail
06

Auto-locking YKK zipper

Premium YKK breakaway reversed #3 coil zip design provides an easy removal exiting the swim.

07

Adjusted shoulder panel seams

Liberates your arms while providing support where you need it most.

08

NEW CORE COMPRESSION ZONE

An updated lower back panel provides enhanced core compression, better support and improved posture in the water. It also reduces the bubbling effect of the fabric in the small of your back to eliminate drag.

09

IXI TAPING

Our patented IXI Taping helps connect the movements of your lower body to your core and arms to increase the efficiency and power transfer of your stroke. 

10

Hydrophobic Technology

Teflon coating repels water and reduces drag and water absorption.

BACK

VIPER SWIMSKIN Size Chart

FIT TIPS

  • Swimskins should fit snugly but comfortably without inhibiting your breathing or arm movement. Fit may feel different while swimming vs. on land, so make sure to try the suit in the water. They are meant to have a tight, compression fit, like a competition pool swimming suit.
  • Note that swimskins are meant to be worn on top of a race top/bottom or race suit only for the swim portion of the race. They are very specific, high performance garments not meant to be worn alone like traditional swimwear and the suits can be see-through under certain light or when wet. Undergarments such as a tri kit or swimsuit are strongly advised.
  • Your race kit will affect the fit slightly, so please be sure to try them on and swim in them with your race kit or another suit underneath.
Select your height, then locate your suggested size based on your weight.
ENGLISH
METRIC
Select Your Height
≤5'4"
5'5"
5'6"
5'7"
5'8"
5'9"
5'10"
5'11"
6'0"
6'1"
6'2"
6'3"
6'4"
6'5"
6'6"+
≤5'4"
125 - 129 LBS
XS
130 - 134 LBS
S
135 - 139 LBS
S
140 - 144 LBS
M
145 - 149 LBS
M
150 - 154 LBS
L
5'5"
125 - 129 LBS
XS
130 - 134 LBS
XS
135 - 139 LBS
S
140 - 144 LBS
S
145 - 149 LBS
M
150 - 154 LBS
M
155 - 159 LBS
L
160 - 164 LBS
L
165 - 169 LBS
L
5'6"
125 - 129 LBS
XS
130 - 134 LBS
XS
135 - 139 LBS
XS
140 - 144 LBS
S
145 - 149 LBS
M
150 - 154 LBS
M
155 - 159 LBS
L
160 - 164 LBS
L
165 - 169 LBS
L
170 - 174 LBS
L
175 - 179 LBS
L
180 - 184 LBS
XL
5'7"
125 - 129 LBS
XS
130 - 134 LBS
XS
135 - 139 LBS
XS
140 - 144 LBS
S
145 - 149 LBS
M
150 - 154 LBS
M
155 - 159 LBS
M
160 - 164 LBS
L
165 - 169 LBS
L
170 - 174 LBS
L
175 - 179 LBS
L
180 - 184 LBS
XL
185 - 189 LBS
XL
190 - 194 LBS
XL
5'8"
125 - 129 LBS
S
130 - 134 LBS
S
135 - 139 LBS
S
140 - 144 LBS
S
145 - 149 LBS
M
150 - 154 LBS
M
155 - 159 LBS
M
160 - 164 LBS
M
165 - 169 LBS
L
170 - 174 LBS
L
175 - 179 LBS
L
180 - 184 LBS
L
185 - 189 LBS
XL
190 - 194 LBS
XL
195 - 199 LBS
XL
5'9"
125 - 129 LBS
S
130 - 134 LBS
S
135 - 139 LBS
S
140 - 144 LBS
S
145 - 149 LBS
M
150 - 154 LBS
M
155 - 159 LBS
M
160 - 164 LBS
M
165 - 169 LBS
L
170 - 174 LBS
L
175 - 179 LBS
L
180 - 184 LBS
L
185 - 189 LBS
L
190 - 194 LBS
XL
195 - 199 LBS
XL
200 - 204 LBS
XL
205 - 209 LBS
XXL
5'10"
125 - 129 LBS
S
130 - 134 LBS
S
135 - 139 LBS
S
140 - 144 LBS
S
145 - 149 LBS
S
150 - 154 LBS
M
155 - 159 LBS
M
160 - 164 LBS
M
165 - 169 LBS
M
170 - 174 LBS
L
175 - 179 LBS
L
180 - 184 LBS
L
185 - 189 LBS
L
190 - 194 LBS
L
195 - 199 LBS
XL
200 - 204 LBS
XL
205 - 209 LBS
XXL
210 - 214 LBS
XXL
5'11"
130 - 134 LBS
ST
135 - 139 LBS
ST
140 - 144 LBS
ST
145 - 149 LBS
ST
150 - 154 LBS
M
155 - 159 LBS
M
160 - 164 LBS
M
165 - 169 LBS
MT
170 - 174 LBS
L
175 - 179 LBS
L
180 - 184 LBS
L
185 - 189 LBS
L
190 - 194 LBS
L
195 - 199 LBS
XL
200 - 204 LBS
XL
205 - 209 LBS
XL
210 - 214 LBS
XXL
6'0"
135 - 139 LBS
ST
140 - 144 LBS
ST
145 - 149 LBS
ST
150 - 154 LBS
ST
155 - 159 LBS
M
160 - 164 LBS
M
165 - 169 LBS
MT
170 - 174 LBS
MT
175 - 179 LBS
L
180 - 184 LBS
L
185 - 189 LBS
L
190 - 194 LBS
L
195 - 199 LBS
XL
200 - 204 LBS
XL
205 - 209 LBS
XL
210 - 214 LBS
XXL
215 - 219 LBS
XXL
6'1"
140 - 144 LBS
ST
145 - 149 LBS
ST
150 - 154 LBS
ST
155 - 159 LBS
M
160 - 164 LBS
M
165 - 169 LBS
MT
170 - 174 LBS
MT
175 - 179 LBS
MT
180 - 184 LBS
L
185 - 189 LBS
L
190 - 194 LBS
L
195 - 199 LBS
L
200 - 204 LBS
XL
205 - 209 LBS
XL
210 - 214 LBS
XL
215 - 219 LBS
XXL
220 - 224 LBS
XXL
6'2"
145 - 149 LBS
ST
150 - 154 LBS
ST
155 - 159 LBS
ST
160 - 164 LBS
ST
165 - 169 LBS
MT
170 - 174 LBS
MT
175 - 179 LBS
MT
180 - 184 LBS
MT
185 - 189 LBS
L
190 - 194 LBS
L
195 - 199 LBS
L
200 - 204 LBS
XL
205 - 209 LBS
XL
210 - 214 LBS
XL
215 - 219 LBS
XXL
220 - 224 LBS
XXL
6'3"
150 - 154 LBS
ST
155 - 159 LBS
ST
160 - 164 LBS
ST
165 - 169 LBS
MT
170 - 174 LBS
MT
175 - 179 LBS
MT
180 - 184 LBS
MT
185 - 189 LBS
MT
190 - 194 LBS
LT
195 - 199 LBS
LT
200 - 204 LBS
LT
205 - 209 LBS
XL
210 - 214 LBS
XL
215 - 219 LBS
XL
220 - 224 LBS
XXL
225 - 229 LBS
XXL
6'4"
165 - 169 LBS
MT
170 - 174 LBS
MT
175 - 179 LBS
MT
180 - 184 LBS
MT
185 - 189 LBS
MT
190 - 194 LBS
LT
195 - 199 LBS
LT
200 - 204 LBS
LT
205 - 209 LBS
LT
210 - 214 LBS
XL
215 - 219 LBS
XL
220 - 224 LBS
XL
225 - 229 LBS
XXL
6'5"
170 - 174 LBS
MT
175 - 179 LBS
MT
180 - 184 LBS
MT
185 - 189 LBS
LT
190 - 194 LBS
LT
195 - 199 LBS
LT
200 - 204 LBS
LT
205 - 209 LBS
LT
210 - 214 LBS
LT
215 - 219 LBS
XL
220 - 224 LBS
XL
225 - 229 LBS
XXL
230 - 240+ LBS
XXL
6'6"+
180 - 184 LBS
LT
185 - 189 LBS
LT
190 - 194 LBS
LT
195 - 199 LBS
LT
200 - 204 LBS
LT
205 - 209 LBS
LT
210 - 214 LBS
LT
215 - 219 LBS
XL
220 - 224 LBS
XL
225 - 229 LBS
XL
230 - 240+ LBS
XXL
Select Your Height
≤163cm
165cm
168cm
170cm
173cm
175cm
178cm
180cm
183cm
185cm
188cm
191cm
193cm
196cm
198cm+
≤163cm
57 - 59 KG
XS
59 - 61 KG
S
61 - 63 KG
S
63 - 65 KG
M
66 - 68 KG
M
68 - 70 KG
L
165cm
57 - 59 KG
XS
59 - 61 KG
XS
61 - 63 KG
S
63 - 65 KG
S
66 - 68 KG
M
68 - 70 KG
M
70 - 72 KG
L
72 - 74 KG
L
75 - 77 KG
L
168cm
57 - 59 KG
XS
59 - 61 KG
XS
61 - 63 KG
XS
63 - 65 KG
S
66 - 68 KG
M
68 - 70 KG
M
70 - 72 KG
L
72 - 74 KG
L
75 - 77 KG
L
77 - 79 KG
L
79 - 81 KG
L
82 - 84 KG
XL
170cm
57 - 59 KG
XS
59 - 61 KG
XS
61 - 63 KG
XS
63 - 65 KG
S
66 - 68 KG
M
68 - 70 KG
M
70 - 72 KG
M
72 - 74 KG
L
75 - 77 KG
L
77 - 79 KG
L
79 - 81 KG
L
82 - 84 KG
XL
84 - 86 KG
XL
86 - 88 KG
XL
173cm
57 - 59 KG
S
59 - 61 KG
S
61 - 63 KG
S
63 - 65 KG
S
66 - 68 KG
M
68 - 70 KG
M
70 - 72 KG
M
72 - 74 KG
M
75 - 77 KG
L
77 - 79 KG
L
79 - 81 KG
L
82 - 84 KG
L
84 - 86 KG
XL
86 - 88 KG
XL
88 - 90 KG
XL
175cm
57 - 59 KG
S
59 - 61 KG
S
61 - 63 KG
S
63 - 65 KG
S
66 - 68 KG
M
68 - 70 KG
M
70 - 72 KG
M
72 - 74 KG
M
75 - 77 KG
L
77 - 79 KG
L
79 - 81 KG
L
82 - 84 KG
L
84 - 86 KG
L
86 - 88 KG
XL
88 - 90 KG
XL
91 - 93 KG
XL
93- 95 KG
XXL
178cm
57 - 59 KG
S
59 - 61 KG
S
61 - 63 KG
S
63 - 65 KG
S
66 - 68 KG
S
68 - 70 KG
M
70 - 72 KG
M
72 - 74 KG
M
75 - 77 KG
M
77 - 79 KG
L
79 - 81 KG
L
82 - 84 KG
L
84 - 86 KG
L
86 - 88 KG
L
88 - 90 KG
XL
91 - 93 KG
XL
93- 95 KG
XXL
95 - 97 KG
XXL
180cm
59 - 61 KG
ST
61 - 63 KG
ST
63 - 65 KG
ST
66 - 68 KG
ST
68 - 70 KG
M
70 - 72 KG
M
72 - 74 KG
M
75 - 77 KG
MT
77 - 79 KG
L
79 - 81 KG
L
82 - 84 KG
L
84 - 86 KG
L
86 - 88 KG
L
88 - 90 KG
XL
91 - 93 KG
XL
93- 95 KG
XL
95 - 97 KG
XXL
183cm
61 - 63 KG
ST
63 - 65 KG
ST
66 - 68 KG
ST
68 - 70 KG
ST
70 - 72 KG
M
72 - 74 KG
M
75 - 77 KG
MT
77 - 79 KG
MT
79 - 81 KG
L
82 - 84 KG
L
84 - 86 KG
L
86 - 88 KG
L
88 - 90 KG
XL
91 - 93 KG
XL
93- 95 KG
XL
95 - 97 KG
XXL
97 - 99 KG
XXL
185cm
63 - 65 KG
ST
66 - 68 KG
ST
68 - 70 KG
ST
70 - 72 KG
M
72 - 74 KG
M
75 - 77 KG
MT
77 - 79 KG
MT
79 - 81 KG
MT
82 - 84 KG
L
84 - 86 KG
L
86 - 88 KG
L
88 - 90 KG
L
91 - 93 KG
XL
93- 95 KG
XL
95 - 97 KG
XL
97 - 99 KG
XXL
100 - 102 KG
XXL
188cm
66 - 68 KG
ST
68 - 70 KG
ST
70 - 72 KG
ST
72 - 74 KG
ST
75 - 77 KG
MT
77 - 79 KG
MT
79 - 81 KG
MT
82 - 84 KG
MT
84 - 86 KG
L
86 - 88 KG
L
88 - 90 KG
L
91 - 93 KG
XL
93- 95 KG
XL
95 - 97 KG
XL
97 - 99 KG
XXL
100 - 102 KG
XXL
191cm
68 - 70 KG
ST
70 - 72 KG
ST
72 - 74 KG
ST
75 - 77 KG
MT
77 - 79 KG
MT
79 - 81 KG
MT
82 - 84 KG
MT
84 - 86 KG
MT
86 - 88 KG
LT
88 - 90 KG
LT
91 - 93 KG
LT
93- 95 KG
XL
95 - 97 KG
XL
97 - 99 KG
XL
100 - 102 KG
XXL
102 - 104 KG
XXL
193cm
75 - 77 KG
MT
77 - 79 KG
MT
79 - 81 KG
MT
82 - 84 KG
MT
84 - 86 KG
MT
86 - 88 KG
LT
88 - 90 KG
LT
91 - 93 KG
LT
93- 95 KG
LT
95 - 97 KG
XL
97 - 99 KG
XL
100 - 102 KG
XL
102 - 104 KG
XXL
196cm
77 - 79 KG
MT
79 - 81 KG
MT
82 - 84 KG
MT
84 - 86 KG
LT
86 - 88 KG
LT
88 - 90 KG
LT
91 - 93 KG
LT
93- 95 KG
LT
95 - 97 KG
XL
97 - 99 KG
XL
100 - 102 KG
XL
102 - 104 KG
XXL
104 - 109+ KG
XXL
198cm
82 - 84 KG
LT
84 - 86 KG
LT
86 - 88 KG
LT
88 - 90 KG
LT
91 - 93 KG
LT
93- 95 KG
LT
95 - 97 KG
LT
97 - 99 KG
XL
100 - 102 KG
XL
102 - 104 KG
XL
104 - 109+ KG
XXL

Overall rating: 4.625 / 5 from 88 reviews.

AI Generated Review Summary

The Men's Viper X2 Swimskin - Short Sleeve is praised for its high-quality construction and materials, offering a perfect and comfortable fit. Many customers find the swimskin to be comfortable and well-made, though opinions on sizing vary.

Summary topics

  • Product Quality: 8%
  • Product Fit: 27%
  • Swimskin Comfort: 18%
  • Product Sizing: 11%

Review topics: ["size","fit","quality","issues","material","zipper","customer service","feels","skin","service","swimskin","suit","race","gear","roka","body","swim","option","work","medium"].

Review highlights

  • "Excellent quality materials selection, the fit is tight perfect and it's true size." — Luis Y.
  • "M side fitted perfectly and super comfortable for 1 hour swimming." — Thomas N.
  • "Excellent quality and fast customer service." — Mariano L.

Reviews

My go to swim tech

"Been using this in many Ironman, oceanman and aquaman warm races. Definitely makes things so much easier. Fit correctly."

— Iman M. (5/5)

Excellent quality and fast customer

"Excellent quality and fast customer service."

— Mariano L. (5/5)

Muy bue. Producto

"Muy bue. Producto"

— Claudio M. (5/5)

More than expected

"So easy for Medium size. M side fitted perfectly and super comfortable for 1 hour swimming."

— Thomas N. (5/5)

Viper x2 swim skin

"I find it’s helping glide through the water. I like the fact that you don’t feel like you’re wearing another layer while you’re swimming. Really does what it’s meant to do! Great product. 👍"

— Craig C. (5/5)

Comfortable suit that pairs perfectly

"Comfortable suit that pairs perfectly with my my Roka aero tri kit. As with all Roka gear (presumably by design), it runs small. I was between sizes so opted for the XL. Large would've been too small."

— Clint L. (5/5)

This thing is a super suit

"Felt to small when I put it on but once it saw the water it fit perfectly. Felt fast in the water. Amazing quality. Locking zipper made me nervous but it works great. I'd recommend 10/10"

— Nikolai Q. (5/5)

I want to love it but…

"I really want to love this swim skin like I do most Roka products, but I've not been able to wear it. One design flaw is not including a zipper string to aid with zipping it up. If you have a muscular build with broad shoulders you will be challenged! I broke the zipper trying to get into my suit (size XXL). $400 in the tube unless I can get it repaired… preferably with a zipper pull string!"

— Andre M. (3/5)

Roka's customer and product support is 5-star!

"If you're broad shouldered you'll need an assist to zip up the swim skin from the back. Unlike Roka wetsuits the swim skin does not have a pull string. I have a muscular build with limited flexibility and broke the zipper while attempting to zip up without assistance. I connected with Roka customer service and they sent me a new suit. I'm 6'1 215-ish and initially ordered an XL. I exchanged it for an XXL. My shoulders are still a problem with the XXL but sizing up was the correct call for me."

— Andre M. (5/5)

Impressive swimskin gear. Very comfortable

"Impressive swimskin gear. Very comfortable to wear and easy on transition."

— Danilo N. (5/5)

Q&A

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