Dakine Cyclone 34L Castlerock Stone Wet/Dry Rolltop Backpack A waterproof backpack for most occassions. The durable wet/dry design uses welded construction and coated Cordura® ripstop to seal out the elements. Key Features: Waterproof welded construction with roll top closure Welded stash pocket with water resistant YKK® PU coated zipper Breathable ergonomic shoulder straps and backpanel Mesh side pocket Adjustable sternum strap 21 x 13 x 9" [ 53 x 33 x 23cm ] 305D Cordura® HP Coated Ripstop. Dakine Cyclone 34L Castlerock Stone Wet/Dry Rolltop Backpack