How to Choose a Wetsuit - Thickness & Size Guide
Why the Right Wetsuit Matters
A well-fitting wetsuit is your most important piece of equipment after your kite or sail. It keeps you warm, protected, and comfortable so you can spend more time on the water. Choosing the wrong thickness or size can ruin your session — too thin and you'll freeze, too thick and you'll overheat and restrict your movement.
Wetsuit Thickness Guide by Water Temperature
Wetsuit thickness is measured in millimeters. The first number is the body thickness, the second is the arms/legs:
- 24°C+ (75°F+): Boardshorts/rashguard or 1-2mm shorty
- 20-24°C (68-75°F): 2mm full suit or 3/2mm
- 17-20°C (62-68°F): 3/2mm full suit
- 13-17°C (55-62°F): 4/3mm full suit
- 10-13°C (50-55°F): 5/3mm or 5/4mm full suit + boots
- 7-10°C (44-50°F): 5/4mm or 6/5mm + boots, gloves, hood
- Below 7°C (44°F): 6/5mm or 6/4mm + full accessories
Types of Wetsuits
Full Suits (Steamers)
Cover your entire body from ankles to wrists. The most common choice for kitesurfing and windsurfing in Europe. Available in all thickness ranges.
Shorties (Spring Suits)
Short arms and short legs, typically 2-3mm thick. Great for warm summer conditions when you need sun protection and light warmth.
Long Johns / Janes
Sleeveless full-length suits. Good for moderate conditions when you want arm freedom but leg warmth.
Wetsuit Fit Guide
A wetsuit should fit like a second skin — snug but not restrictive. Here's what to check:
- No gaps: Water should not pool in the lower back, chest, or behind the knees
- Full range of motion: You should be able to reach overhead and squat without restriction
- Neck seal: Snug but not choking — you should be able to fit one finger inside the collar
- No bunching: Excess material around joints causes chafing and lets water flush through
Key Features to Look For
Seam Construction
- Flatlock seams: Budget-friendly, suitable for warmer water. Small holes let some water in.
- Glued & blind-stitched (GBS): The standard for cold-water suits. Panels are glued together and stitched halfway through — no holes.
- Sealed/taped seams: Premium option. GBS with liquid tape inside for maximum waterproofing.
Entry System
- Back zip: Easiest to get in and out of. Good for beginners.
- Chest zip: Less water entry, more flexibility. The most popular choice for kitesurfers.
- Zipperless: Maximum flexibility and warmth. Can be harder to put on.
Neoprene Quality
Premium neoprene (like Yamamoto) is lighter, stretchier, and warmer than standard neoprene. It costs more but makes a huge difference in comfort and performance.
Top Wetsuit Brands We Carry
Browse our men's wetsuits and women's wetsuits from ION, Neilpryde, and other premium brands.