Cotton Imported A perfect addition to your backpack, the Fjallraven Kanken Bottle Pocket can fit a water bottle up to 1 liter as well as a built in frame that keeps it in place in the backpacks side pocket. Closure with elastic draw cord at top for easy securement. Drainage hole in base for any accidental spills. 100% vinylal. Do not wash, clean with soft brush and lukewarm water.