Grundens Deck Boss Ankle Boots feature a thermoregulated, anti-microbial cooling liner. These are 100% waterproof ankle boots that are easy to slip on. Providing all day protection from the elements, keeping your feet cool and comfortable. The asymmetrical top line provides comfort and ergonomics while on deck. Keep your feet planted for that catch of a lifetime. Siped gum rubber outsole All-day comfort foot bed100% waterproof with reinforced pull loops and asymmetrical top-line Anti-microbial, temperature regulating liner.