The bag has the shape of an isosceles triangle with angle measure approximately 87 degrees, of 23x23x29 centimeters area and about 8 centimeters deep filled, empty about 7 centimeters. 4 centimeters (as specified by the manufacturer) is the enhanced framework deep pocket. She has a flat inner chamber for cell phone, wallet, keys, etc. with additional mesh pocket and pulled in a more spacious compartment eg for the bicycle tool. In the larger compartment, there are also two brackets for a mini air pump to 21 centimeters in length (depending on the shape / papers at the ends and up to 24 cm total length). The three mounting tabs outward (Velcro fasteners) hold up to 13 centimeters pipe circumference safe and are at the two short sides (to the tubes out) variable to install.