PREMIUM MEMORY FOAM insoles provide optimal comfort for all-day wear while the included free washable, removable fit inserts add an extra layer of cushion and shape to your feet for arch support and weight distribution. Propper Series 100 coyote boots are AR-670 and AFI 36-2903 military compliant and based on true U.S. sizing. The Series 100 8” Side Zip Composite Toe Boot augments the highly successful Series 100 line with a ASTM F2413-11 rated safety toe that meets or exceeds I/75 and C/75 Impact and Compression Resistance and EH Electric Hazard. The arch design resists wear and tear from ladders and fast-roping. The size zipper and speed lacing system allows for quick put-on and take-off. The high-quality cattle hide suede and nylon materials will stand up over time to keep you moving.