... ISO Cuff is made by one time. Dowcorning silicone Seven Sizes available Disposable Silicone Laryngeal Mask, CE and ISO1. The tube and cuff are made ... of improted medical-grade Silicone. 2. Seven sizes, 1. ... more information, pls feel free to contact us, thank you. Disposable Silicone Laryngeal Mask, CE and ISO