Our 15L Oxygen Canisters are a durable and lightweight way to administer pure oxygen to pets in respiratory distress or needing transport to care. Each canister has 15L of (99%) oxygen and requires a regulator, tubing, and mask (not included) for use. The canister seal has a 2-year shelf life from the batch date, if stored properly in a cool, dry environment. Oxygen ground shipping restrictions apply to this product.   *This product only contains 15L canisters and is not the full oxygen kit.