Teenagers will appreciate the adult features combined with innovative adjustability in the Osprey Ace 48. This is a great pack for Scouting, and aspiring long distance backpackers and mountaineers. Features: Capacity: 2900 cu. in. Weight: 4 lbs 2 oz. Approximate age range: 12 - 16 years old. Torso length: 14 - 20" / 35.5 - 50.5cm.