O'Neill's Zipless entry 2mm shorty wetsuit constructed with super light TechnoButter 3 and TechnoButter 3X is the most unique lightweight fully sealed shorty suit on the market. Recycled TechnoButter 3X: O'Neill's exclusive new pre-stretched neoprene with featherlight ENVY foam rubber core now features fully recycled jerseys on the inside and outside. This light, flexible, soft material offers superior flexibility and fit.