I have a well used Gregory technical day pack. In very good condition except there is fading here and there of the original purple color. Area's have faded to light blue. Don't know the volume exactly but best guess I'd say from 30 to 35 liters. Heavy duty throughout, #10 coil zipper works fine, Cordura pack cloth. Good pack for squeezing through sandstone slots, chimney's, as a haul bag and other such uses were packs take a beating. Also setup for ice tools. Included is a Gregory padded hydration bladder case - like for a Platypus 2 quart size. No damage. US made. $35.00 shipped.