Whether it's a full Ironman or sprint tri, Castelli's Core Tri Shorts won't let you down. Pace 3 fabric is light, breathable, and offers great muscle support. The lie-flat leg elastic and waist band are comfortable whether you're running, riding, or swimming, and these shorts feature a rear envelope pocket for that critical, race-winning gel or energy bar. Castelli's KISS 3 Tri chamois pad dries quickly, offers great support on the bike, and stays out of the way on your run. Speed Hooks seamlessly integrate these shorts with any Castelli tri jersey.