The Louis Garneau Wind Pro Zip Leg Warmers use Light Wind Pro for exceptional wind blocking performance. Made with a very tight construction that blocks four times more wind than traditional fleece, Light Wind Pro fabric insulates your lower legs from becoming cold and cramped up on long, chilly rides. It's also highly breathable, allowing built up perspiration to evaporate when you're working up a sweat. Plus, its UPF 50 rating ensures proper protection from harmful UV rays on sunny days. Featuring a nine inch zipper running from the ankle on up, these leg warmers are super easy to take on and off. Super Light Grips along the upper thighs stabilize the leg warmers without adding excess bulk. Articulated knees promote full mobility and unrestricted pedaling. Other important features include smooth flatlock seams to eliminate irritation, as well as reflective accents for boosted visibility at night.