Features of the Castelli Men's Free Protect Race Bibshort Double-layer side panels for extra protection in the event of a fall A special smooth layer of our Vortex fabric backed by a stretch woven fabric featuring a Dyneema? ripstop grid Forza fabric on inner legs with 38% Lycra? content for perfect Fit Stripe mesh engineered minimalist bib construction to keep you cool Giro4 leg gripper elastic for better grip distributed over larger Area Doppio V construction in front for increased support and comfort Flat-lock stitching Progetto X2 Air Seamless seat pad