Air Force Compliant, Work Ready The Air Force-compliant Tanicus boot has a side zip for easy on and off. Aircraft mechanics working in freezing cold conditions will appreciate the 400g of Thinsulate™ Ultra Insulation. A non-metallic safety toe provides comparable protection to steel toes but doesn't get cold or set off metal detectors. Specifications Style 55325 Weight 58 oz per pair Closure Zip-Up Height 8" Insulation 400G Thinsulate Color Coyote Footbed Polyurethane Shank Bi Fit Board Safety ASTM F2413-18 I/75 C/75 EH Last Type 851 Lining Waterproof Liner Danner® Dry Outsole Danner® Tanicus Recraftable No Country of Origin Vietnam Manufacturing Imported Certification AFI 36-2903 requirement for optional wear Toe Protection Composite Toe (NMT)