Chota???s exclusive Posi-Loc system holds this 5 mm zippered neoprene bootie securely on the foot. Featuring a 7 mm thick all-terrain vulcanized rubber sole and unique plastic midsole, coupled with a vulcanized rubber toe cap and heel counter, this bootie is ideal for a wide range of water sports activities. The triple-glued seams and zipper dam assure warmth by eliminating cold water exchange. Limited quantity.