The original, 100% waterproof, ankle length cycle oversock. Lightweight and streamlined, the Thetford is the ultimate oversock for cleated cycling footwear. Signature Aquasealz™ technology combines waterproofness with breathability, letting perspiration escape. Reflective detailing offers greater visibility at night. Polyester and nylon blend is soft and insulative, with a four-way stretch providing a close fit. The Thetford is the answer to non-waterproof cycling footwear, keeping feet aerated and dry. Explore overshoes.