Name: High upper vulcanization diving boots Material: 3mm-5mm Neoprene Features: Precise suture, Vulcanization sealing , YKK zipper, Fitting feet design. Suitable For: Scuba diving , and other water sports Actual Thickness: 4.3~5 CM (The material thickness will change due to the heat expansion and contraction and the long time storage) Elastic: Super Stretch Antiskid: Goodly