This product is designed to be connected with automatic ventilator system or manual rescuscitators so as to provide protection for patients. Specifications: 1. Silicone anesthetic face mask is made from medical grade silicone 2. It is with transparent mask for good visualization; 2. It can be autoclaved repeatedly at 134° C temperature;ture;ture; 3. It is available with 6 sizes for both adults and children's needs; 4. Latex free. 5. Poly-bag packing. Payment term: By T/T or L/C Shipping time: Within 30 days. Sainty is always your best option.