The Nitro L.E. Bib Shorts are made of Cannondale's breathable Nitro fabric. Plus, they boast a contoured 8-panel cut that actually relieves fatigue by supporting your muscles so you can ride stronger longer. Cannondale's supportive X L.E. chamois has padding in all the right places and the mesh bib uppers offer total freedom of movement. These fine bibs also feature leg grippers and reflective accents for safety.