Keep out rain and wind with this, the first bootie using OutDry(R) technology. OutDry(R) offers a waterproof and windproof barrier but remains flexible so fits to your shoes just right. Top Features of the Castelli Tempesta Overshoes 4-way stretch water-repellent nylon outer shell Absolutely waterproof OutDry(R) technology membrane Ultralight waterproof zipper Neoprene cuff for easy on/off and secure fit around the ankle Open bottom to work with all types of cleats Reflective print at the back and center front Cordura(R) sole 168g (pair) Windproofness Waterproofness Insulation Product Data Stretchy: Yes Taped Seams: Yes High Visibility: No Road: Yes Keep everything out Introducing the first bootie to feature OutDry(R) technology. Castelli have vacuum bonded a seamless membrane to the outer shell to make sure nothing can come in. They have also built in a neoprene cuff to seal around your ankle and added a waterproof zipper. Use this with Castelli's own Tempesta leg warmers for the best possible solution to keep your feet dry.OUTDRY(R)OutDry(R) patented technology achieves a fully waterproof, windproof and breathable laminated outer shell. With OutDry(R), the elements are stopped at the first layer and with no extra layer, garments breathe better and stay flexible.