Castelli UPF 50+ Light Leg Skins Leg Warmers Black – Large. Key Features Temperature Range: 20° – 35°C / 68° – 95°F Solare Fabric Keeps the Chill Off Without Causing Overheating UPF 50+ Protection Polyester Based for Excellent Moisture Management Double-Side Silicone Elastic at Top for Excellent Grip Ankle Zip for Easy On/Off Approx. Weight: 219g Rating ★☆☆☆☆ Windproof ★☆☆☆☆ Waterproof ★☆☆☆☆ Insulation ★★★★★ Breathability ★★★★★ Lightweight Description The Castelli UPF 50+ Light Leg Skins not only keep you dry and warm but also offer protection from harmful rays. Even though Castelli could officially only rate these warmers at UPF 50+, in their laboratory tests they actually blocked 99.8 percent of damaging UV rays. They’re constructed with a polyester base that is not only more effective than nylon at blocking UV rays but is also much better at keeping you dry, which means these skins are better in both cooler and warmer conditions. Castelli kept the construction very clean to eliminate seams that can rub, and they used their double-sided silicone elastic to make sure they stay in place. They fold up extremely small, so they’re great to stick in your pockets for your next big mountain day. About Castelli Castelli Sport was founded in 1974 under the iconic scorpion logo to provide premium racing clothing to the next generation of riders, utilising space age (at the time) Lycra for the first time. Something that brought Merckx, Hinault and Moser through the door and gave rise to a new range of innovations derived from the demands of these legendary riders. Today Castelli continue to build upon their heritage, supporting the champions of cycling by constantly reworking existing designs and materials to produce some of the finest clothing available. NB: Castelli clothing is sized small, Tweeks Cycles recommend you select one size above normal for an athletic fit, or two sizes above if you prefer a more relaxed fit. Please see the sizing guide tab for more information. Image for illustration purposes only.