This is a size M Yamato Michi THREE backpack. This is a discontinued and very popular color. Size: standard Color: Coyote Brown Capacity: 40 liters The back pad inside has been replaced with the separately sold optional Breatable Pad (good breathability). There are no tags, so the year of manufacture is unknown. I purchased this used on this site and used it only once for mountain climbing. From the time of purchase, there were scratches and dirt on the bottom inside, scuffs on the back pad, and color fading on the outer pocket side. Please check the photos. The elastic was loose, so I bought new elastic and replaced it myself, but I mistakenly used a slightly thinner type of elastic. There are also parts where the elastic hasn't been replaced, so if you are concerned, please refer to the thickness of that elastic. This is a used item, so please understand this before purchasing. I will ship it in a compact form. Yamato Michi marmot Marmot Patagonia Patagonia Norrona NORRØNA Outdoor Trail running Trail running Running Jogging Marathon Mountaineering Mount Fuji climbing Papersky PAPERSKY atelierbluebottle Atelier Blue Bottle Axesquin ENLIGHTENED EQUIPMENT evernew Evernew Gossamer Gear Half Track Products HOUDINI Houdini hyperlite mountain gear Hyperlite Mountain Gear Locus Gear Luna Sandals MELANZANA mont-bell Montbell mikikurota Moonlight Gear Mountain Laurel Designs Nruc OGAWND Ogawand OMM Pa'lante Packs RawLow Mountain Works RIDGE MOUNTAIN GEAR Ridge Mountain Gear Senchi Designs Six Moon Designs Sora Titanium Gear Teton Bros Vivobarefoot Vivo Barefoot xero shoes Zpacks Jindaiji Mountain Works Hike Moonlight Gear Ultralight Answer4 duckbill The North Face