Features Balistic mesh & synthetic upper Merrell Omni-Fit lacing system provides a glove like effect Hyperlock molded TPU heel counter for security for quick-on-your-feet stability Protective and abrasion resistant rubber toe cap Breathable mesh lining Kinetic Fit Base removable contoured isole for flexible support Merrell M Select GRIP+ rubber outsole is sticky & durable for superior grip and traction on wet or dry terrain Heat resistant outsole provides foot protection for brief period of direct contact that meet or exceed 500 AdegF 5mm lug depth