Wetsuit

Neoprene suit for open water swimming that adds buoyancy and warmth. Required below certain temperatures.

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Understanding Wetsuit

A triathlon wetsuit is a neoprene suit designed specifically for open water swimming. Unlike surfing wetsuits, triathlon wetsuits are built for forward swimming motion with thinner, more flexible neoprene in the shoulders and thicker panels in the torso and legs for buoyancy.

The primary benefit is buoyancy — a wetsuit lifts your hips and legs higher in the water, reducing drag and improving your body position. For weaker swimmers, this can improve swim times by 5–10%. The secondary benefit is warmth, making cold open water swims comfortable and safe.

Triathlon rules govern wetsuit use: they're typically allowed when water temperature is below 76.1°F (24.5°C) for age-groupers. Above that, they're banned. Most triathlons provide water temperature updates before race morning. A well-fitted wetsuit should feel snug (like a second skin) without restricting shoulder movement.

Key Facts: Wetsuit

Key facts and insights about wetsuit that every endurance athlete should know.

Triathlon wetsuits have thinner shoulder

Triathlon wetsuits have thinner shoulders (1.5–2mm) and thicker torso (3–5mm)

Improves swim times by 5–10% through add

Improves swim times by 5–10% through added buoyancy and reduced drag

Allowed in most triathlons when water te

Allowed in most triathlons when water temp is below 76.1°F (24.5°C)

Price range

Price range: $150–$800; rental options available for first-timers

Pro Tips: Wetsuit

Practice open water swims in your wetsuit at least 3–4 times before race day

Apply Body Glide generously to your neck, wrists, and ankles before putting it on

Practice fast wetsuit removal: reach behind, pull to waist, step on one leg at a time

Buy or rent a triathlon-specific suit — surfing wetsuits restrict shoulder movement too much

Frequently Asked Questions About Wetsuit

Not necessarily — check if the water temperature requires one. In warm water, you'll swim in a tri suit. In cooler water, a wetsuit is strongly recommended for warmth and buoyancy. Many local tri shops and race organizers offer rentals, which is smart for your first race.

Very snug — like a compression garment. There should be no air pockets or loose material, especially around the torso and legs. But you need full range of motion in your shoulders. If you can't reach overhead comfortably, the suit is too small in the upper body.