Features of the Danner Men's Instinct Tactical 8 Inch 400G Boot Durable, waterproof polishable leather Upper with ripstop nylon Danner Dry waterproof protection Thinsulate Ultra Insulation Semi-locking YKK side-zip Danner Boundlite platform provides superior rebound and comfort underfoot PerfX PU Footbed offers lightweight cushioning, lasting durability and breathability Low Density PU Midsole offers shock absorption and lasting rebound Nylon shank Danner Instinct slip-resistant rubber Outsole with pentagonal lugs offers stability and superior traction Instinct series Features Danner Dry waterproof liner, which has been tested and approved for bloodborne pathogen resistance and meets ASTM F1671-18.