How to Choose a Wetsuit Thickness, Fitting, & Type

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Before choosing and buying a wetsuit you’ll need to consider thickness and water temperature, sizing and proper fit, and the zipper type.

The biggest factor when choosing a wetsuit is thickness. Generally, thicker wetsuits are warmer. When looking at wetsuits, you’ll notice different numbers in the names like 4/3, which refer to wetsuit thicknesses. The higher the numbers, the warmer a wetsuit. For example, a 3/2 wetsuit, is 3 millimeters through the torso, and 2 millimeters in the arms and legs.

Surfers in Southern California with water in the mid-60s typically use a 3/2. Pacific Northwest surfers with water in the low to mid-50s, use a 4/3 or 5/4. If you’re surfing in water below 58°F, you’ll want a hood, booties, and gloves.

Size and fit are important because a wetsuit that’s too big is prone to flushing where water gets in the neck or cuffs and flushes out warm water insulating your body. A too small wetsuit will be hard to put on and restrict range of motion. Every brand has different sizing so to ensure a good fit consult each brand’s size chart. If you’re new to wetsuits, a proper fitting wetsuit will be challenging to put on, but should never restrictive movement or breathing once you’re in.

Lastly, you’ll have to choose a type of wetsuit entry system which comes down to preference and budget.

Back zip wetsuits are the easiest to get in/out of thanks to the big zipper that runs down the back. Back zips also generally have a lower price point, making them great for beginners who aren’t ready to spend a lot of money on a wetsuit.

Chest zip wetsuits are trickier to get in/out of due to their narrower entry, but they’re more flush resistant than back zips. Chest zips offer better flexibility through the back/torso too since they don’t have the big zipper running down the middle.

Zipperless wetsuit designs are usually only found on lightweight wetsuits, 3/2 or thinner, as they prioritize mobility over warmth. As expected, zipperless wetsuits are the most challenging type to put on/take off. They also cost more compared to chest or back zips.

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[brendanhoffmann]

I have a wetsuit that is a shoulder zip on both shoulders. It's a Rip Curl from the 70s. It doesn't fit me anymore so I ordered something reasonably cheap. But from a place that makes custom wetsuits so good baseline of quality. Neptune.

[n-da-bunka]

Thanks! Was trying to pick out a wetsuit that would work here in Mountain Island Lake, North Carolina. Temps are around 50 degrees this time of year and wanted something that could keep me warm while still active on the lake. Chose a 4/3mm from Dakine

[sofialopez]

Thank you so much for all the info! Super helpful!

[FRElston]

I am just over 6ft tall and a UK dress size 12-14 and I can’t find anywhere that sells a single wetsuit that I could get into. Any advice for me? I guess it wouldn’t be wise to resort to a men’s wetsuit as the fit would be way off. I don’t want to give up yet…

[daniellahuang]

It's fantastic, Could you send me more details of it ? and the color, thanks, !

[theresamartinezhr]

I live in the Columbia gorge and would like to paddle board more often, (not only on hot days). Not planning on getting wet but it could happen. What size type would I need?