When you're prepared, the shoulder seasons can be the most enjoyable times to ride. The weather is moderate, the sun is usually shining, and the roads are clear for cycling. However, wearing your summer bib or winter pants are going to leave you either soaked in sweat or shiveringly cold. When you need a little 'oomph' for the season, the Castelli Ergo Bib Knicker is ideal. With a three-quarter leg covering made from proprietary materials, the Ergo Bib Knicker provides the right amount of warmth without sacrificing its race-day fit.Castelli's Ergo Bib Knicker uses a multi-panel construction that's made from the exclusive Affinity fabric. This material provides a slight compression that helps to reduce muscle fatigue by increasing blood flow. Just as important for long hours in the saddle, the Affinity fabric is highly breathable and it wicks moisture efficiently to its quick-drying surface. And while staying dry is crucial, so is the freedom of movement. To ensure this, the Ergo uses an eight-panel design that promotes full articulation and muscle support throughout the cycling movements. The fit is further complemented by the incorporation of a breathable mesh upper and straps.The Ergo Bib Knicker has you resting on Castelli's Kiss3 Chamois. The chamois adapts prominent features of the pro-level Progetto X2, like a seamless construction and a brushed microfiber surface layer. This reduces skin-friction and abrasion, and the Kiss3's Bacteriostatic treatment mitigates the threat of saddle sores or infection. For prolonged comfort, the Kiss3 uses a variable thickness pad with maximum padding placed at the ischial zone for support, and minimum thickness at the perimeter to minimize chafing. The Castelli Ergo Bib Knicker is available in sizes from Small to XXX-Large, and in the color Black/white stitching.