Wetsuits
Choosing the right wetsuit for triathlon swimming — fit, thickness, and what to look for.
By Lotte
A triathlon wetsuit improves swim speed by 5-10% through added buoyancy and reduced drag. Fit is the most critical factor — it should be snug without restricting shoulder movement.
Key takeaways
- 1Wetsuits make you 5-10% faster through improved buoyancy
- 2Fit is the #1 priority — snug but not restrictive at the shoulders
- 3Full sleeve provides maximum buoyancy; sleeveless offers more freedom
- 4Rinse in fresh water after every use and never dry in direct sunlight
In this article
Why wear a wetsuit?
Wetsuits provide buoyancy (making you faster), insulation (keeping you warm), and protection. Most triathletes swim 5-10% faster in a wetsuit due to improved body position.
Wetsuits are allowed in most races when water temperature is below 24°C (76°F).
Fit is everything
A triathlon wetsuit must fit snugly without restricting shoulder movement. It should feel like a second skin — tight but not constricting. Water should not pool anywhere inside.
Try before you buy if possible. Many shops offer pool test sessions.
Sleeveless vs. full sleeve
Full sleeve wetsuits offer maximum buoyancy and warmth. Sleeveless suits provide more shoulder freedom and are easier to remove in T1.
If you have good shoulder mobility, go full sleeve for maximum benefit. If you feel restricted, try sleeveless.
Wetsuit care
Rinse your wetsuit in fresh water after every use. Hang it in shade to dry — never in direct sunlight. Store flat or on a wide hanger. Use wetsuit-specific lubricant to prevent chafing.
With proper care, a quality wetsuit lasts 4-6 years.
Wetsuit comparison by level
| Feature | Entry ($100-200) | Mid-Range ($200-400) | Premium ($400-800) |
|---|---|---|---|
| Neoprene quality | Standard | Yamamoto 38/39 | Yamamoto 40/44 |
| Flexibility | Moderate | Good | Excellent |
| Buoyancy panels | Basic | Strategic placement | Full body optimization |
| Thickness | 3-5mm uniform | 2-5mm varied | 1.5-5mm varied |
| Durability | 3-4 years | 4-5 years | 5-6 years |
| Best for | First-timers | Regular racers | Competitive athletes |
Recommended gear
Affiliate disclosure: Brick to Brick may earn a commission from qualifying purchases, at no extra cost to you. Unless a named method says otherwise, these are research-based recommendations rather than first-hand product tests.
Frequently asked questions
Can I rent a wetsuit for my first race?
Yes, many triathlon shops and race expos offer wetsuit rentals for $30-60. This is a great way to try different brands and sizes before buying.
How tight should a triathlon wetsuit be?
Very snug — like a second skin. There should be no air pockets or loose areas. It will feel uncomfortably tight on land but stretches slightly when wet. If you can easily pull the neoprene away from your body, it's too loose.