Each set of Blasani flasks set contains: Four (4) 16oz, four (4) 8oz and one (1) funnel. Those flasks are reusable, easy to fill, heavy duty, collapsible. Flasks are made of durable, puncture resistant, odor proof and taste proof clear polyester. Blasani flasks stand up when filled and are flat and can be rolled up and put in your pocket when empty. The flasks have positive seal spouts are freezable and perfect for any non-carbonated beverage. The Blasani flask are non-metallic, undetectable and ideal for concerts, stadium events, sports fans, air travelers, golfers, hikers, hunters and skiers. Enjoy in your next activity the best authentic Blasani flask you can have.