Weight: [5L] 7 oz, [10L] 11 oz, [20L] 14.5 oz, [30L] 1 lb 4 oz, [40L] 1 lb 8 oz, [55L] 1 lb 12 oz * Volume: [5L] 280 cu in, [10L] 620 cu in, [20L] 1170 cu in, [30L] 1950 cu in, [40L] 2400 cu in, [55L] 3310 cu in * Dimensions: [5L] 7 x 8 in, [10L] 8 x 14 in, [20L] 9 x 16 in, [30L] 11 x 19 in, [40L] 13 x 20 in, [55L] 13 x 25 in * Material: [body] vinyl (19oz, scrim-reinforced), [bottom] vinyl (30oz, scrim-reinforced) * Backpack Straps: no