This is the Mystery Ranch Radix 31L men's model. Purchased at a&f. Used approximately 3 times for mountain climbing. Please check the photos for the condition. There is some rubbing on the inside of the waist belt, but it's not visible during use. The back panel is a men's SM adjustable type. I'm selling it to organize my collection of backpacks. The condition is good, but please understand that this is a used item. Size: 30-45L Search terms: Yamato Michi hyperlite mountain gear Gossamer gear atelierbluebottle rawlow mountain works Answer4 ENLIGHTENED EQUIPMENT senchi designs HIGH TAIL DESIGNS Melanzana FarPointe Vado Red Paw Packs Kampai Gearworks and wander Six moon designs Moonlight gear Locus gear Mountain laurel designs Zpacks sola titaniumgear Nruc Cumulus mikikurota RIDGE MOUNTAIN Vivobarefoot Lightweight