FAQs How to stretch drysuit neck seals? It is not necessary to stretch the neck seal on your drysuit. The seals on Collins Drysuits are made from neoprene or latex, which have elastic properties and will conform to the size and shape of your neck. It will likely take a couple of wears to get a comfortable fit, but it’s important to persevere. A close fit is required to prevent water getting in. We do not recommend stretching or cutting your drysuits neck seal to loosen it. Forcibly stretching it can cause the seal to become misshapen, which can affect the seals effectiveness. If you have difficulties getting into your drysuit, try powdering the neoprene seals with French chalk. < All FAQs