Based on the boot we co-developed with the U.S. military, the STANDARD ISSUE (S.I.) ASSAULT SHOE is an athletically inspired design of premium lightweight materials. This latest edition features enhanced load-bearing stability, improved anatomical fit and even greater tread durability. Prime urethane shock absorption and moisture wicking linings maintain the highest level of comfort. For wet/dry traction on both smooth and rough terrain, the sole combines vulcanized rubber with directional lug geometry.