Endura Thermolite Bib Knickers use the same insulating Thermolite fabric and 600-Series Endura chamois as the Thermolite Pro Biblong, but in a mid calf length. Fleece-backed Thermolite fabric is soft against skin and provides excellent warmth-to-weight ratio. The hallow-core fabric technology allows air to circulate away from the skin to keep you from overheating. Multi-panel leg construction allows the knicker to follow the contours of the muscles giving great support and compression. A sculpted rear panel behind the knee provides a precision fit while in the riding position. And the best part is that all seams use flat-lock stitching to eliminate chafing. The upper part of the bib knicker is constructed of super stretchy Thermolite, forming a seamless transition from the legs. Because of Thermolite's four-way stretch, a zipper entry is unnecessary. Completing the highly functional knicker is Endura's top-of-the-line chamois. The 600-Series chamois features a 3D multi-density antibacterial pad. The chamois is perfectly contoured to give added protection where needed and includes air channels between these areas to increase air flow. For cold days on the bike when a full length leg would be overkill, the Endura Thermolite Bib Knicker provides just the right mix of insulation and breathability. Available in sizes Small through XXLarge.