The Castelli Velocissima Thermal Women's Knickers are warm and comfortable, thanks to their composition from Thermoflex fleece fabric, and are ideal for wearing in typical British cycling conditions, when it's dry but cool out.They're built around the Kiss Air2; Donna seat pad, which is tailored to a woman's anatomy and constructed from a single piece of variable thickness foam with a smooth cover. It's perfect for medium distance rides or those where you'd rather not have cumbersome padding.The practicality of the Velocissima Thermal Women's Knickers is enhanced by a reflective band at the ankle to enhance your visibility, while the waist is constructed to lie flat and stay put. They're perfect for autumn and spring anytime use.Features:Ideal for medium-distance rides in cool but dry conditionsConstructed from warm, fleecy Thermoflex fabricWith the high-performance Kiss Air2; Donna seat pad, made for womenLie-flat waist elastic holds these thermal tights in placeReflective bands at the bottom of the leg will help to keep you safe in dim conditionsWeighs 203g (small size)For use at temperatures from 12-19C, 54-66F