Sprint is constructed from lightweight, durable 90% Polyester/10% Spandex, with stretch fabric across the quads and around the rear of the shorts. Side waist adjusters allow quick and unobtrusive fit adjustments. The Sprint short won't make things any easier for the competition. Focusing on how the kit fits and feels on the bike, we have revised articulation points and used lighter, more durable materials in the pants and shorts. All helping to make the Sprint kit even more race ready.