Features: * Made of medical grade pvc * DEHP free, 6P free, Latex free, Scents free * High transparency allows good visibility * Elastic and soft property provides excellent sealing and maximum comfort. * Ergonomics design to provide perfect feeling (avoid mouth touch) * With removable color coded hook ring design to avoid uncomfortable finger touch and easily identify the size. * Tail inflation valve provide consistent sealing force. * Mask can be connected with the anesthesia ,breathing machine,oxygen breathing machine,high pressure chamber ,imbibe-way painless childbearing machine as well as the rescue respiration bag .* Suitable for use of anesthesia ,respiratory and resuscitator.