The Castelli Bandito Wool Long Sleeve Base Layer, one of the brand's toastiest, is made from a mixture of merino wool, for warmth, recycled polyester, for added wicking and durability, and a touch of elastane for stretch. The result is a base layer so comfortable that you'll never want to take it off. Designed for use during medium intensity, cold weather rides, it fits closely and has a high collar and long sleeves to keep your neck and wrists cosy. This handily machine washable base layer will keep you dry and fresh out on the trails on a winter's day. Features Blends warmth with moisture management. Made from 125g/m² 48% merino wool, 47% recycled polyester, 5% elastane fabric. High collar, long sleeves. Machine washable. Weighs 141g (medium size). For use at temperatures from -4-10˚C, 25-50˚F.