Rivers, lakes and seas; from the Great North Swim to your daily dip… Designed in collaboration with industry guru Dean Jackson to promote your natural swimming position, Terrapin was made with adventure swimming and open water in mind.

Terrapin is our thinnest, most flexible wetsuit. It provides enough buoyancy to help you move swiftly through the water, adds a thermal layer to keep you warm, and still leaves you with excellent freedom of movement for an unrestricted stroke, particularly around the shoulders.

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Compared to the Lotic, Terrapin features thinner neoprene around the back of the leg. This means it has minimal impact on your body’s buoyancy, reducing body roll for a more natural swimming position. 2 mm neoprene at the neck reduces chafing, and the underarm neoprene is thinner still (1.5 mm), giving you the flexibility you need to really extend your reach for long powerful strokes.

Terrapin uses Glideskin neoprene. This gives it excellent dirt and water repellence, which reduces drag through water so that you move efficiently. Glideskin also reduces heat conduction from the body, making it warmer than standard neoprene. The lower leg is a high abrasion area, so we’ve used nylon-faced neoprene around the calf and shin for added durability.

The wrists, shoulders and neck feature bright flashes of blue to help you stay visible in the water. A long lanyard zip puller up the back means you can get into your wetsuit without relying on a passer-by to help you!

Terrapin is great affordable suit for a natural swimming experience, ideal for both stronger swimmers, and those making their first strokes into open water.

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Key Features

  • Lower buoyancy wetsuit for a more natural swimming position in the water
  • Glideskin neoprene reduces drag so you can swim more efficiently
  • Thinner neoprene around the underarms and shoulders for freedom of movement
  • High flexibility around shoulders for unrestricted arm movement
  • Long lanyard on rear zip so you can get in and out of your wetsuit independently
  • Zipped pouch on the inside for valuables
  • 3 Year Alpine Bond

Vital stats

Panel construction

Neck: 2 mm Nylon Faced Neoprene
Chest: 3 mm Glideskin
Back: 3 mm Glideskin
Shoulder: 2 mm Glideskin
Lower Sleeve Cuff: 1.5 mm Nylon Faced Neoprene
Butt: 2.5 mm Glideskin
Crotch: 2.5 mm Glideskin
Armpit Panel: 1.5 mm Nylon Faced Neoprene
Upper Leg Front and Back: 2.5 mm Glideskin
Lower Leg Front: 2.5 mm Nylon Faced Neoprene
Lower Leg Back: 2 mm Nylon Faced Neoprene
Lower Leg Cuff: 2 mm Glideskin

Origin: China

Sustainability & Care

Product Care Information

When you are pulling on your suit take care not to use your finger nails. Check your suit for fit and range of motion. Your suit will feel different when wet. The neoprene collar and cuffs can be trimmed with scissors if they extend too far. Rinse your suit out with fresh water after each use. Hang the wetsuit inside out and allow to dry away from direct sunlight or heat source. Store your suit in a cool room on a wide plastic coat hanger. Roll your suit when transporting rather than fold. Don’t use petroleum products with your suit as this will damage the neoprene. Small tears can be repaired with neoprene cement/glue.

Size Guide
Men's wetsuit sizing chart
Size Height Weight
X Small (Duel only) 5'0" to 5'6" 55 to 65 kg
Short & Strong 5'5" to 5'11" 75 to 85 kg
Small 5'4" to 5'10" 60 to 70 kg
Small Tall (Duel only) 5'7" to 6'1" 65 to 75 kg
Medium 5'8" to 6'1" 70 to 80 kg
Medium & Tall (Not Duel) 5'9" to 6'2" 70 to 80 kg
Large 5'9" to 6'2" 80 to 90 kg
X Large 5'9" to 6'2" 90 to 100 kg
Tall & Strong (Duel only) 5'10" to 6'4" 80+ kg
Note: These suits are sized for a performance fit, so if you are unused to wearing a swimming wetsuit you may still find it tight. If you prefer a comfort fit go up a size, but note it will be less thermally efficient.
Athlete Adventure Review Terrapin Wetsuit
Would recommend the Terrapin to anyone who wants a high quality, affordable and reliable wetsuit for non-winter UK swimming both in the fresh and sea water. The Terrapin is a reliable addition to anyone’s training gear repertoire, the quality of Alpkit shines through during use, the ‘warm and fuzzy’ you get from the Alpkit staff and the Alpkit Alpine Bond means you can train hard and rest assured that you are covered with quality. To me, the Terrapin is the minimalist running shoe of wetsuits that packs performance.
Outdoor Swimmer Terrapin Wetsuit Review

A great compromise between a natural swimming position and a more robust suit that will take being roughed around a bit. The buoyancy of the suit (only 1.5mm to 3mm neoprene thickness) is more than the Orca and Sailfish but still less than triathlon wetsuits. The nylon covering of the legs and sleeves make it a robust choice

Outdoor Swimming Society Great Wetsuit Test

Outdoor Swimming Society put our Terrapin, Lotic and Silvertip to the test

Terrapin featured in the Evening Standard's best wetsuits of 2021
"Alpkit’s Terrapin wetsuit has been specifically created for open-water swimmers, with features that are designed to support your natural swimming position in the water."

Read the full review here

Who Cares What You Wear
There are now a few brands with swimming suits designed more for adventure than racing. A couple of these give a more natural experience and some have reduced the buoyancy that you get in a traditional swimming wetsuit, which could be great if prefer Breaststroke to the front crawl position most suits naturally put you into. It is possible that these suits may help with the backache that some swimmer experience from the buoyancy in the legs that regular swimming suits have.

Terrapin Natural Swimming Wetsuit in action