CARBON FIBER TOE: Asymmetrical, non-metallic carbon fiber toes are lighter than steel, warmer, comfortable and provide heavy-duty protection; Meets ASTM safety standards WATERPROOF LEATHER: Genuine leather construction with KEEN. DRY waterproof, breathable membrane; Cleansport NXT Technology for natural odor protection COMFORT MIDSOLE: KEEN Luftcell dual-density PU midsole is injected with air for extra comfort and lightness; Removable metatomical PU footbed; TPU shank for extra support in the midfoot SECURE DESIGN: KONNECTFIT heel-capture system provides a locked-in fit; 90-degree heel for stability while climbing ladders; Oil- and slip-resistant non-marking rubber outsole SAFETY STANDARDS: Midsole meets ASTM D471-06 903 Chemical Resistance Standards; Outsole meets ASTM F2913 SATRA and ASTM F1677-96 Mark II Non-slip Testing Standards; Safety toe meets ASTM F2412 and F2413 EH Standards