The original, military-trusted sock, enforced with Hydrostop™. A men's and women's waterproof sock, the Briston thrives in multiple environments. Hydrostop™ prevents water dripping down leg into sock. Lightweight and breathable. Handcrafted in the Sealskinz factory in Norfolk. Please note that due to the close bond between sock cuff and skin, over prolonged use, some people may experience minor skin irritation due to the Hydrostop™ barrier rubbing against the skin. For those who experience any irritation, we recommend that Hydrostop™ socks are only used outdoors and not for a prolonged period of time.