Each kit contains two 240ml and one 470ml easy filling, heavy duty, collapsible flasks and one funnel. The Flasks are made of durable, puncture resistant, odour proof and taste proof clear polyester, they 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 liquid, making them ideal for Hunting, Camping & Hiking; because as the contents are used the flask collapses. When the air in the flask is expelled and the cap is sealed the excess displacement is removed. This prevents any sloshing and noise normally associated with a water bottle or a canteen. The flask can be slipped into a pant or jacket pocket and carried. The flask can be frozen or heated as the circumstances require. When the flask is empty it is simply rolled up and put in your pocket.