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How to choose a wetsuit for diving?

How thick a wetsuit you need for the water temperature, why a two-piece suit suits Lithuania, and how to check that a suit fits.

Water conducts heat about 20 times better than air, so a diver needs thermal protection. This article is about the wet-type diving suit, the wetsuit.

What wetsuits are made of

Modern wetsuits are mostly made of neoprene, but there are also suits of Lycra, spandex and other materials. A modern neoprene suit usually has a plush lining, follows the shape of the body, and is elastic and strong enough.

Lycra suits keep in little heat: they are mostly meant to protect the diver from scrapes and other skin injuries in warm water.

How thick a suit you need

The thickness depends on the conditions you will dive in. By their thermal properties, suits fit these water temperatures:

Water temperatureSuit
24–29 °C1.6 mm neoprene, Lycra, Polartec
21–29 °C3 mm neoprene
18–24 °C5 mm neoprene
10–21 °C6.5 mm neoprene

Remember that neoprene compresses as the pressure increases, and then keeps you less warm.

A two-piece suit for Lithuanian water

Many manufacturers offer two-piece wetsuits, which in our view are ideal for our conditions. Lithuanian waters don't have time to warm up over the summer: even in midsummer the water at 10 m is only 12–15 °C. With a two-piece suit whose pieces are both 7 mm thick, you will feel fine diving in Lithuania all season.

For dive trips

On a dive trip, the main (first) piece of this suit will serve you well at practically any latitude. Many divers heading south choose a 1.5–3 mm shorty (a thin suit with short sleeves and short legs). That is a matter of taste, but in a suit that covers your arms and legs you feel much more comfortable and safer among venomous corals you may touch by accident, among jellyfish, or when you visit a wreck.

How to check that a suit fits

  • The suit must fit snugly, so that water can't circulate between your body and the suit.
  • It mustn't restrict your breathing or movement.
  • Zips on the sleeves and legs are very convenient: they make the suit easier to put on and take off.

Colour

Lithuanians tend to be conservative and avoid bright colours, but remember: the more visible you are, the safer you are.

A well-chosen and well-cared-for wetsuit will last you for many years. You can try wetsuits on in our shop in Vilnius or choose one online.

Frequently asked questions

What wetsuit do I need for diving in Lithuania?

Lithuanian waters don't warm up over the summer: even in midsummer the water at 10 m is only 12–15 °C. In our view a two-piece suit with both pieces 7 mm thick is ideal: with it you will feel fine all season.

What wetsuit is good for dive trips?

The first piece of a two-piece suit serves well at practically any latitude. Many choose a 1.5–3 mm shorty for the south, but a suit that covers your arms and legs is more comfortable and safer among corals, jellyfish or on wrecks.

How do I know a wetsuit fits?

It must fit snugly, so that water can't circulate between your body and the suit, and it mustn't restrict your breathing or movement.