The Belleville 550 ST Hot Weather Olive Green Safety Toe Boots are U.S. Marine Corp Uniform Approved boots that provide comfort even in hot temperatures. Belleville 550 ST Hot Weather Safety Toe Boots are constructed of VIBRAM Sierra outsole designed to perform in diverse and rugged terrain. Exclusive VIBRAM compounds guarantee maximum traction on both wet and dry surfaces. 8" Steel Toe Boots VANGUARD® Running Shoe Sole Construction Upper Material – Full Grain Cowhide Leather / CORDURA® Nylon Fabric Meets ASTM F2412-05 and F2413-05 Standards Lining – COOL-MAX® Cushion Midsole – Polyurethane Outsole – Rubber, VIBRAM® Sierra Polyurethane Removable Insert Height – 8" (Standard Military Height)