Dark Speed Works Speedpack 483 - Advanced 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 shape, tapered and contoured in three dimensions. Extended pack shape derived from a low-drag symmetrical airfoil. Concave bottom keeps the pack tight and aero on your top tube. Exclusive advanced hybrid strap system allows Speedpack to mount securely anywhere on your top tube with ZERO rotation or slipping, and allows for a perfect fit on a wide range of top tube shapes. Aerodynamic hidden YKK zipper with dual two-way sliders allow easy access to your gear. Tough coated nylon sides resist water and abrasion. Full-length rubberized bottom grips top tube to keep Speedpack in position. Custom shaped HDPE plastic insert and high-density closed cell foam side panels keep aero shape, protect cargo and provide insulation. Approximate Capacity: 483cc (29.5 ci). Holds up to four 2.4 oz Clif bars (bars unwrapped & halved).