what size is it?

Tech Specs:

Material:

ripstop siliconized nylon 

Volume:

[5] 305 cu in; [10] 610 cu in; [15] 915 cu in; [20] 1220 cu in; [30] 1831 cu in 

Dimensions:

[5] 6 x 13; [10] 7 x 15; [15] 8 x 17.5; [20] 9 x 20; [30] 11 x 21 

Closure:

, 

Weight:

[5] 0.8 oz; [10] 1 oz; [15] 1.1 oz; [20] 1.4 oz; [30] 1.6 oz 

Recommended Use:

backpacking, expeditions, paddling 

Manufacturer Warranty:

lifetime