Whether it's for a full Ironman, a sprint tri, or training, Castelli's Core W Tri Shorts won't let you down. Pace 3 fabric is light, breathable, and offers great muscle support for endurance events. 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 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.