Thank you for viewing. This is a Deuter Bike Air EXP 16 backpack with a breathable mesh back panel. If you understand that this is a used item, please consider purchasing. Retail price: 12500 + TAX - Brand: Deuter - Model name: Bike Air EXP 16 - Cycling Cross bike ZAC backpack Manufacturer's description ■ Weight: 1050g ■ Capacity: 16 + 4 L ■ Size: 48 / 25 / 22 (height x width x depth) cm ■ Material: Deuter-Ripstop-Polytex / Deuter Ripstop Polytex Deuter Duratex Bright / Deuter Duratex Bright ■ Composition ratio: ・Polyester: 40% ・Nylon: 60% ■ Description: This is a bike-specific pack that uses the Deuter Aircomfort FlexLite system, which enhances back ventilation. This model can increase capacity with a side zipper opening. ■ Details: ・Built-in rain cover ・H2O system (compatible with Streamer 2.0L) *Streamer not included ・Helmet holder ・Chest strap ・Side & front pockets ・Expandable (+4 liters) 【Deuter Aircomfort FlexLite System】 1. The shoulder straps covered with 3D air mesh are shaped to fit the curves of the body, providing comfortable breathability. 2. The two-frame structure allows the Aircomfort FlexLite system to be particularly lightweight while providing high flexibility and durability. By combining durable flat and round steel frames, it moves in conjunction with the body's movements and distributes the load to the hip fins. It also stabilizes the back mesh panel, which allows ventilation from three directions. 3. Stabilizer straps to keep the pack in the correct position. 4. Sturdy hip fins shaped to fit the curves of the body firmly stabilize the pack at the waist.