Our socks are fully waterproof thanks to 3-layers: a wear resistant knit exterior (feels like a regular sock), a waterproof breathable Artex™ membrane, and a Coolmax FX moisture wicking anti-bacterial lining. The result is a sock that feels like a sock but protects like a rain bootie. Now you don't have to choose between keeping your feet dry and breathability (we don't like sweaty feet either). A reinforced toe and heel provide comfort and durability.