Features: brand new and high quality Oxygen mask with reservoir bag to assist breathing and is specially designed for high concentration oxygen therapy. Non-rebreathing masks deliver oxygen concentrations of oxygen up to about with a flow rate of 10-15 liters/minute. High concentration high flow oxygen therapy,comfortable use by the patient - lightweight reservoir improves oxygen efficiency and patient comfort transparent tube with flexible universal connecting tip,it is suitable for all kinds oxygen equipment. There are three users standard adult/kids/infant,please choice and check before you buy follow need. High quality material , it is made of plastic material , durable ,healthy ,you can use at assure . The oxygen mask with adjustable elastic rope ,it is easy to wear ,convenient to get a comfortable . Specifications: Material:Plastic Size: Bag:22cm×13.2cm/8.66×5.20inches Tube:260mm/10.24inches Type:Adult,Kids,Infant Flow Rate:about 10-15 liters/minute Oxygen Concentration:100%(Flow Rate:about 10-15 liters/minute) Package Includes: 1 Set Oxygen Mask Include: 1 Piece Oxygen Mask 1 Piece Tube 1 Pice Bag note: Please allow 1-2cm errors due to manual measurement. Due to the difference betweeen different monitors,the pic may not reflect the actual color of the item.