Pearl Izumi's P.R.O. Thermal Cycling 3/4 Bib Tights are the perfect defense against cold knees when the temperature drops. For unbeatable comfort and an awesome fit they're made of Pearl's P.R.O. Thermal fabric and constructed with flat-lock seams for chafe-free rides. Pearl's 4D Pro chamois provides plenty of plush padding you'll love and the bib uppers have Direct-Vent technology for temperature regulation. The 3/4 length comfortably covers your knees keeping them warm and fluid in cold weather.