Find your perfect fit
Men's Long Sleeve Rash Guard Size Guide
Measure yourself, not a garment you own. US orders: the men's rash guard runs small — size up if between sizes. EU orders: sizing runs big — size down if between sizes.
Measure Yourself
Chest
Waist
Hips
Find Your Size
| Size | Chest inches / cm |
Waist inches / cm |
Hips inches / cm |
|---|---|---|---|
| XS | 36¼ in / 92 cm | 29⅞ in / 76 cm | 37 in / 94 cm |
| S | 37¾ in / 96 cm | 31½ in / 80 cm | 38⅝ in / 98 cm |
| M | 39⅜ in / 100 cm | 33⅛ in / 84 cm | 40⅛ in / 102 cm |
| L | 42½ in / 108 cm | 36¼ in / 92 cm | 43¼ in / 110 cm |
| XL | 45⅝ in / 116 cm | 39⅜ in / 100 cm | 46½ in / 118 cm |
| 2XL | 48⅞ in / 124 cm | 42½ in / 108 cm | 49⅝ in / 126 cm |
| 3XL | 52 in / 132 cm | 45⅝ in / 116 cm | 52¾ in / 134 cm |
Measurements shown are body measurements, not garment measurements. Click any row to highlight your size.
Fit Tips for Diving
US orders: size up
The men's rash guard runs small for US customers. If you're between sizes or on the border, we recommend sizing up. A slightly roomier fit is more comfortable for long dive days and easier to layer under a wetsuit.EU orders: size down
EU production uses a different material that runs larger. If you're between sizes or on the border, we recommend sizing down. EU customers should expect a more generous fit compared to standard US sizing.Stays put under your BCD
Our men's rash guards are designed to stay in place through multiple dives. Size to your chest for the best fit — the rash guard should feel snug enough to not ride up under your BCD, but comfortable enough to move freely underwater.Layering under a wetsuit
A rash guard worn under a wetsuit reduces friction and helps the wetsuit glide on more easily. For layering, size true to your chest measurement — a close-fitting rash guard works best as a base layer under neoprene.Which Measurement to Prioritise
If your chest, waist, and hip measurements suggest different sizes, always prioritise your chest measurement for a rash guard — it determines the overall fit across the shoulders, arms, and torso. Use the region selector above to get the most accurate recommendation for your order.
Still not sure about your size?
We're happy to help before you order — send us your measurements and we'll recommend the best fit.
Corals planted with every purchase
Designed for divers with Sun Protection
Made to order = no excess waste
Easy returns, quality guaranteed