Castelli's Nano Flex 3G Legwarmers have been designed so that they're great for all weather conditions this winter. To ensure you stay warm while out riding, these legwarmers are made to be breathable and prevent sweat from building up in order to keep you dry and warm. With Castelli's Nano Flex fabric, you'll be protected from the wet as these legwarmers are water-protective whilst ensuring they maintain their thermal properties to keep you warm and dry when the weather is damp and cold out. Weighing only 119g makes for a lightweight pair of legwarmers that have very little impact, if any, on your training. Also equipped with double-sided silicone means these legwarmers will stay put whilst out riding, with no slipping due to the secure grip they provide. Featuring Castelli's flat-lock stitching with a single seam in place optimises your comfort when out on those winter rides by preventing any irritation that may otherwise occur.