This light, calf-length gumboot is made of EVA (think of croc footwear). Priced to fit everyone’s budget, these gumboots are 70% lighter than PVC knee boots. They feature a 100% seamless waterproof construction. Tiny air bubbles insulate the foot in the winter, and cool it during the summer. It has great low temperature properties for flexibility and durability with a cleated outsole for good traction. Unisex/Mens sizing