Size Guide Chamois Guide Designed for riders committed to spring Monument success, our top-tier Apex Winter Bib Tights combine thermal protection and weather resistance to keep you pushing through the harshest conditions. Starting thermal coverage at the bib straps, these tights feature water-resistant proprietary Lycra panels on the lower legs and rear to fend off freezing rain and spray, while stretchy Roubaix fabric elsewhere ensures a comfortable, flexible fit that lets you ride all day in cold weather without restriction. Construction: CS WinterFleece™ fabric (leg and body panels) soft insulating "Roubaix" style thermal fabric offering stretch for improved fit and comfort. CS Winter Shield™ fabric (knee, thigh and side panels) - Highly water resistant and breathable three layer bonded fleece fabric. Windproof and thermal. Features: Chamois pad included in construction. High waist thermal panels, also on the back, extend into thermal bib straps. Rear water resistant posterior panel to fend of spray. Water resistant side panelling comes down to fully cover knee section. Fit: Correct sizing is critical to receive performance benefits from this product. Samples are available, on request, to help customers make the right informed sizing decision.