Tactical Research Belleville Flyweight TR513 Hot Weather Boots leather-and-rubber Rubber sole Highly breathable cattle hide leather and nylon upper. Single density molded EVA insole with 3 layers of cushioning comfort for superior shock absorption. Compression molded EVA midsole and TR Adrenaline oil and slip resistant rubber outsole. Double and triple stitched seam for enhanced durability. AR-670-1 compliant.