ACE Tactical Defender Mid Nano Composite Toe Boots Unisex M5 。Features (from website) Nano Composite Safety Toe: Lightweight and roomy Nano Composite Safety Toe (non-metallic, non-magnetic). Meets ASTM F-2413 standards bearing a class 75 rating Easy Clean: Superior SFC slip-resistant outsole with our patented clog resistance built in. Water-Resistant: Treated to repel liquids from the surface. Ladder Grab feature: Raised ridges in the shank area of our outsole are textured to provide extra grip when stabilizing oneself on ladder rungs. Non-metallic Padded collar and gusseted tongue Water-resistant leather and textile upper Weight (per shoe): 22.4 oz Meets ASTM F2413-18 (I75/C75, Electrical Hazard-EH)/ASTM F3445-21 (for slip-resistance), using the ASTM F2913 whole shoe test method