XTRATUF Performance Series 12" Men's Neoprene & Rubber Deck Boots, Black & Castle Rock (22603) NOTE : Kindly refer the USER GUIDE where the size chart is available below before purchasing the product Slip-resistant, non-marking Chevron outsole provides excellent traction in extreme conditions on any surface 4 mm CR Flex-foam bootie keeps feet dry and comfortable all day; sub-zero temperature rating keeps feet protected in cold weather Breathable Airmesh lining keeps active feet cool and comfortable Stretch topline binding provides secure, comfortable fit; combines with rear pull loop for easy on/off Lightweight rubber and neoprene construction flexes and bends freely for superior comfort and performance