Rapha Core Bib Shorts, Size L Used for 3 rides after purchasing new. Essential bibs for any ride. The Rapha Core Bib Shorts use a performance-proven chamois to provide performance, comfort, and great value for everyday cyclists. Product Details Main panel uses high-density knit fabric for a supportive, understated look. Single-density, size-specific chamois for lasting comfort. Flatlock seams are placed to prevent chafing. Laser-cut, soft silicone grippers prevent shorts from slipping. Stretchy bib straps with a cutout in the center for improved breathability. A cutout in the center of the lightweight, breathable upper for easy temperature regulation. Ideal for moderate to warm temperatures.