Men's isothermal pants, with elastic ribbed waist and elastic bottom. Grooves on the front and back, adjusts precisely under the crotch, for a perfect anatomical fit. Special weave on the front and back of the legs to ensure proper muscle ventilation. Composition of 66% polyamide, 26% polyester and 8% Elastane (polyurethane elastomer fibers). SIZE: S/M, L/XL, 2XL/3XL, 4XL/5XL