This is a backpack from Burton's high-end "[ak]" series. It uses lightweight and highly durable materials, making it an ideal model for backcountry, snowboarding, and mountaineering. It features rear access for smooth gear access. With a waist belt and chest strap, it provides a stable and comfortable carrying experience. From the manufacturer: ⬛︎About the Product Perfect for both short and long trips, this backpack features an Aeropro trampoline back panel that fits comfortably against your back. A backpack that delivers peak performance in any season. The Burton [ak] Incline Pack 30L expands your horizons, regardless of the season. The Aeropro trampoline back panel promotes air circulation, and the ergonomic air mesh shoulder straps provide a superior carrying experience. In short, it offers top-level backcountry performance. Packed with [ak] technology, it features intuitively placed pockets for everything from splitboards and snow tools to hydration systems and car keys. Both in terms of style and usability, it's simply the best. ⬛︎Product Features 210D nylon double ripstop with PU coating / 500D Cordura® nylon with PU backing Ergonomic air mesh shoulder harness with chest strap / Adjustable torso (approx. 17-20 inches) Aeropro trampoline back panel that circulates air while preventing snow from entering Ergonomic waist belt with accessory pocket Helmet carry / Snow tool pocket Side compression straps that can also be used as tool attachments / A-frame splitboard carry / Stowable vertical board/splitboard carry Fleece-lined goggle & accessory pocket, hydration system compatible, zippered mesh pocket with internal key clip, stowable drop-down bottle pockets on both sides ⬛︎Specs Dimensions 57cm x 27cm x 13cm Weight 1.5kg Volume 30L Used once and stored, so the condition is good.