Outside: .2 stretch mesh pockets on straps Outlet of the hose from the water bag on the right or left ramp .2 passers for maintaining the hose of the water bag .Sifflet aluminum signaling on the suspenders .2 zipped side mesh pockets, easy to access .1 adjustable chest strap .1 adjustable waist belt .Our EVA with molded relief pads for better ventilation, removable and interchangeable. Designed to attach the SBS 136.1 backbone Triangular bottom: additional protection of the battery against shocks. Inside: .1 compartment with straps to come to fix a e bike's battery (type: Bosh, Yamaha, Shimano, max length: 49cm). .Insulated zipped water cooler compartment with Velcro tabs to suspend the water bag. .Large high visibility zipped zipped compartment with side opening, including: a zipped satellite pocket, a strap to fix the pump, a carabiner to fix its key ring, a net compartment in the bottom of the bag, a zipped micro-fiber compartment (for phone, glasses ...), and 2 compartments zipped mesh. Reflective strap on the lower base of the bag for attaching a lamp.