Gregory Mountain Products Z55Gregory Mountain Products Gear ReviewsZ55Price $229.00SpecsFrame Type internal Load Type top-loading Fixed Capacity (cubic inches) 3417Sizes Available 3 Smallest Size (Torso Length/Inches) 16Features Spindrift collar, Hydration sleeve (no bladder included), Water bottle holsters, Interchangeable suspension parts (hipbelt and shoulder harness come in multiple sizes), Shove-it (or shovel) pocket, Daypack conversion Weight 3 lbs, 15 ozMoreExisting model