Designed for the hardworking heroes the Rocky S2V GTX WP 400G Insulated Military Boot is sturdy enough to survive military challenges and practical enough to please an array of varying wearers. The waterproof and breathable GORE-TEX construction offers sturdy support sure to last arduous circumstances while the 400g 3M Thinsulate insulation delivers warmth. The Vibram outsole delivers traction and Aegis Microbe Shield efficiently keeps odor at bay. Moreover the Roll-Stop Ankle Stability provides a stable foundation. Waterproof and breathable GORE-TEX construction 400g 3M Thinsulate insulation Roll-Stop Ankle Stability Moisture-wicking Dri-Lex lining Vibram outsole PTFE coated for flame-resistance LYCRA tongue Fiberglass shank Triple-stitched construction Uniform compliant (AR 670-1) Berry compliant Made in USA Style number: FQ00104-1.