Merrell Women's Antora 3 Mid Waterproof Carbon Fiber Construction Boot Size 11 new in box! Black, gray, purple Waterproof membrane seals out water and lets moisture escape Merrell Air Cushion in the heel absorbs shock and adds stability COMFORTBASE rubberized EVA midsole for increased shock absorption and cushion Slip and oil resistant durable rubber outsole; Mark II tested Carbon Fiber Safety Toe for protection; rated ASTM F2413-18 F/I/C Merrell work footwear labeled F2413-18 F/I/C (typically including EH or SD ratings) complies with ASTM standards for protective, safety-toe footwear. The F/I/C denotes Female/Impact/Compression, indicating a safety toe (composite, alloy, or steel) that meets 75-pound force impact and 2,500-pound compression tests.