The Ultimate Buyer’s Guide to Wetsuits
Buying a wetsuit can feel a bit like trying to solve a puzzle while wrapped in tight rubber. Between the confusing numbers, different zipper styles, and various seam types, it’s easy to get overwhelmed.
Whether you are catching your first wave, diving into open-water swimming, or upgrading your weekend paddleboarding gear, buying a wetsuit is an investment in your comfort and safety. A good wetsuit keeps you warm, protects your skin, and extends your season.
But with so many options on the rack, how do you choose the right one? Let’s break down everything you need to know to buy with confidence.
1. The Golden Rule: Fit is Everything
You could buy the most expensive, technologically advanced wetsuit on the market, but if it doesn't fit correctly, it won't keep you warm.
A wetsuit works by trapping a thin layer of water between your skin and the neoprene. Your body heat warms this water, creating an insulation barrier. If the suit is too loose, cold water will constantly flush through, defeating the purpose.
How it should feel: Like a second skin. It should be snug everywhere, with no sagging in the crotch or bunching under the arms.
The Breath Test: You should be able to breathe deeply and move your arms in a paddling motion without feeling restricted.
The Dry vs. Wet Factor: Wetsuits are always harder to put on when dry. They will loosen up slightly once you get into the water.
Pro-Tip: If you are between sizes on a brand's size chart, always prioritize your height and chest measurements over weight.
2. Decoding the Numbers: Thickness vs. Water Temperature
Wetsuit thickness is measured in millimeters (mm) and usually written as two or three numbers (e.g., 3/2mm or 4/3mm).
The first number represents the thickness of the neoprene around your torso/core to keep your vital organs warm.
The second (and third) numbers represent the thickness on your limbs (arms and legs) to allow for easier movement and flexibility.
Use this quick reference guide to match your local water temperature to the right suit thickness:
| Water Temperature | Recommended Thickness | Wetsuit Style | Recommended Accessories |
| 20°C+ (68°F+) | 1mm – 2mm | Shorty or Springsuit | None needed |
| 15°C to 20°C (60°F to 68°F) | 3/2mm | Full Suit | Boots (if you get cold easily) |
| 12°C to 15°C (53°F to 60°F) | 4/3mm | Full Suit | Boots & Gloves (if you get cold easily) |
| 8°C to 12°C (46°F to 53°F) | 5/4mm or 5/4/3mm | Full Suit (Hood optional) | Boots & Gloves |
| Below 8°C (Below 46°F) | 6/5mm+ | Hooded Full Suit | Thick Boots & Gloves |
3. Entry Systems: Back Zip vs. Chest Zip vs. Zipperless
How you get into your wetsuit matters just as much as how it feels once it's on. There are three main entry styles:
Back Zip
The classic design featuring a long zipper down the spine and a leash so you can pull it up yourself.
Pros: The easiest to get on and off; usually the most budget-friendly.
Cons: Less flexible across the back; more prone to "water flush" (cold water leaking through the zipper).
Chest Zip
Features a smaller zipper across the flap on your chest. You slip into the suit through the neck opening.
Pros: Excellent seal against water entry; more flexible across the back and shoulders for paddling.
Cons: Harder to wriggle into and take off (requires a bit of technique!).
Zipperless
The ultimate in high-performance suits, relying on overlapping, ultra-stretchy neoprene panels around the neck.
Pros: Maximum flexibility and comfort; zero zipper bulk.
Cons: The hardest to get on and off; can stretch out over time.
4. Seams and Stitching: The Unsung Heroes
How the panels of neoprene are joined together determines how durable and watertight the suit will be.
Flatlock Stitching: The seams are stitched through the neoprene. It’s highly durable but lets water seep through the pinholes. Best for warm water (3/2mm or thinner).
Glued and Blindstitched (GBS): Panels are glued together and then stitched only halfway through the fabric so water can't pass through. Great for mid-to-cold water.
Taped/Liquid Sealed: GBS seams that are reinforced with internal tape or a liquid rubber compound. This offers the ultimate waterproof seal and maximum warmth for serious cold-water adventurers.
Final Thoughts: Quality Costs, but Warmth is Priceless
When buying a wetsuit, try to budget for the best neoprene you can afford. Cheaper suits tend to be stiffer and less durable, while premium suits use high-stretch neoprene that makes paddling easier and lasts for seasons to come.
Take your time, try a few brands on, and get ready to enjoy the water!