Dark Speed Works Speedpack 480 - Aerodynamic Top Tube Bento Pack/Frame Bag for Cycling, Triathlon, Gravel nylon Made in USA Made in the USA by DarkSpeedWorks.com - Many more photos at Instagram.com/darkspeedworks and lots of Speedpack reviews & feedback at DarkSpeedWorks.com/feedback.htm Advanced CAD-designed aero shape, tapered and fully contoured in three dimensions. Concave bottom panel and precisely angled front keep the Speedpack snug and aero on your bike. Three bottom velcro straps hold Speedpack securely to top tube and provide more mounting options. Two front velcro straps allow for max flexibility for aero attachment to stem and steerer. Aero hidden YKK zipper with dual two-way sliders allow super easy storage access. Tough coated nylon sides resist water and abrasion. Rubberized bottom grips top tube to keep Speedpack in position. Custom shaped HDPE insert and high-density closed cell foam panels keep aero shape and protect and insulate cargo. Approximate Capacity: 480cc (29.3 ci). Holds up to four 2.4 oz Clif bars (bars unwrapped & halved).