U.S. AIR FORCE FLIGHT APPROVED
VANGUARD® Running Shoe Sole Construction Upper Material – Black Leather / Nylon Fabric GORE-TEX® Fabric Bootie Lining - OMAHA Moisture Wicking Lining 200g THINSULATE™ Insulation Cushion Midsole – Polyurethane Outsole – VIBRAM® FIRE & ICE™ designed to improve traction in icy conditions Polyurethane Removable Insert Height – 8” (Standard Military Height)