Product Code: TC2307BAn aerodynamic top tube fuel box design minimizes wind drag while eliminating interference with legs. Mounts by built-in top tube integrated bosses or secure scratch-free straps. The large opening provides quick and convenient access to energy bars, gels, or other energy items. Compatible with triathlon, time trial and road bikes.Capacity 0.65L / 40 ci, 6-8 gel packs Material TPR / Engineering grade polymer Bag attachment Triathlon - top tube frame mount with integrated bosses Road - straps on frame top tube Top tube diameter Fits ø33 - ø72 mm Added feature Secure scratch-free straps, 3M™ transparent protective film Size 26.7 x 6.3 x 4.9 cm / 10.5” x 2.5” x 1.9” Weight 207 g / 7.30 oz (with straps) Mounts on triathlon frame top tube with built-in mounting bossesMounts on frame top tube (ø33 - ø72 mm) with two secure scratch-free straps using 3 possible mounts positionsAerodynamic design minimizes wind drag and and eliminates leg contactThe uniquely designed shell allows cables to route straight through to the top tube