Men’s Keen Composite toe work boot, size 12. Only used once. KEEN.DRY waterproof, breathable membrane Heat-resistant rubber outsole rated up to 572°F/300°C KEEN.FUSION construction fuses the upper to the sole for a longer-lasting bond without glues or solvents. Contoured heel lock is anatomically shaped to reduce heel slip KEEN.BELLOWS FLEX technology adds an engineered flex zone in the forefoot area for up to 3x easier bending, flexing, and knee-down work Shank for midfoot support premium leather