TrekSta Men's T801-Kobra II GTX Trail Running Shoe 100% Synthetic and textile Rubber sole NestFIT system cradles your foot, accounting for every contour as it follows the natural flow and design of the foot Ice Lock / HyperGrip sole provides traction in any condition Triple Density Eva insole supports the arch, cushions key strike zones, and strengthens your stride Boa Lacing System locks foot securely in place