The Castelli Free Aero RC Bib Tights are ideal for cool or cold weather cycling. They are designed to keep you at a comfortable temperature while providing some protection from the elements. Made from soft, warm, and stretchy Nano Flex 3G fabric, these bib tights are highly breathable and offer wind and light rain resistance.The lower inner leg is made from a lighter and more splash-proof Nano Flex material, while the bib straps have an open weave design for maximum airflow. There is also a small pocket on the foot of the straps for storing a gel.The leg endings are raw cut and stretchy, eliminating the need for zippers or grippers that could interfere with shoe covers. Reflective tabs on the back of the legs increase visibility in low-light conditions.These tights feature Castelli's best seat pad, the Progetto X² Air Seamless. With two densities of foam and gel pads that absorb vibrations, this pad offers exceptional long-distance comfort.The Free Aero RC Bib Tights are perfect for long training rides. No matter how long you cycle, these tights will ensure you stay comfortable and feel great, even in less favorable weather conditions.Key Features:- Focus on comfort and warmth- Progetto X² Air Seamless pad for all-day comfort- Nano Flex 3G material with wind and water resistance- Light Nano Flex stretch woven inner lower leg for splash resistance- Stretchy, raw cut leg ending for better shoe cover compatibility- Minimalist, low bulk bib straps with a rear pocket- Reflective tabs at the back of legs for increased visibility- Weighs 279g (medium size)- Recommended for temperatures of 2-12?C (36-54?F)