SUGOi Apparel Size Chart Built for long days in the saddle. The RS Pro Bib Short's multi fabric construction has impeccable comfort and fit, anchored by a 3D chamois with Cradle design. Features: - Ultra Aero fabric on outer thighs for maximum aero efficiency - Pitstop 2 technology for quick bathroom breaks - Invisa chamois eliminates stitch lines around the chamois for a flattering silhouette - Updated Formula FX chamois with Poron foam at sit bone area for better performance - Infused silicone gripper leg band for a clean, smooth fit - Fabric: Ultra Aero S (80% Nylon 20% Spandex)