For triathletes and other endurance riders who need quick access to energy bars, but prefer a zippered closure instead of the open Tri Box design . Watertight YKK Uretek zipper keeps out rain, sweat, and energy drink spills. An interior sleeve/pocket helps with organization. Center is reinforced with foam to protect your frame; the sides are backed with truck tarp for strength and durability. Bag attaches to bike with three point Bak2Bak hoop and loop. Tri Pod Pro 1 6.5 x 1.5 x 3.75 , 30 cu in Watertight YKK Uretek zipper keeps out rain, sweat, and energy drink spills An interior sleeve/pocket helps with organization Center is reinforced with foam to protect your frame; the sides are backed with truck tarp for stren Bag attaches to bike with three point Bak2Bak hoop and loop Tri Pod Pro 1 6.5 x 1.5 x 3.75, 30 cu in