SPECS: Small weight: 0.6 oz. Small dimensions: 5' wide x 5' deep x 5' tall Small volume: 2 liters Medium weight.74 oz. Medium dimensions: 10' wide x 5' deep x 5' tall Medium volume: 4 liters Large weight.95 oz. Large dimensions: 10' wide x 10' deep x 5' tall Large volume: 8 liters DESIGN & DETAILS: Constructed to utilize available space and maximize how much you can carry Made out of ultra-durable Dyneema Composite Fabric Wrap around webbing closure compresses your pack so that it takes up as little space as possible Material has 104 lb. tensile strength per inch 3.5 lb puncture strength Abrasion-resistant material.