This is the DCF version of the LITE WAY GRAMLESS PACK. I've used it about three times. As you can see, the condition is quite good. The back length is M/L, which should be fine for most men. The material is 2.92 oz DCF (Dyneema® Composite Fabric Hybrid). Dyneema® Composite Fabric (formerly Cuben Fiber), a durable, abrasion-resistant, and waterproof material, is specially designed to be as lightweight and abrasion-resistant as possible. It is flexible, lightweight, thin, and waterproof. The capacity is a maximum of 35L, but as is common with overseas packs, this is the total, with the main compartment being about 28L. Center pocket: 3L Side pockets: 2 x 2L Harness stretch pockets: 2 x 0.5L Total: 35L. Weight capacity: 12kg. #mountaineering #hiking #ul #yamatomichi