Treksta Women's Sidewinder Trail Running Shoe 100% Mesh and Synthetic Rubber sole Durable, stable and exceedingly wear resistant Hypergrip outsole with ice and snow enhanced traction of IceLock Fine tuned effortless dialing of the BOA lacing system eliminates pressure points and providers a glove-like fit. Synthetic snakeskin rand and toe cap protect upper against wear and abrasion TPU shank protects against shock and supports natural foot structure Boa lacing system locks foot securely in place