1. Made of Non-toxic medical grade PVC. 2. Soft tip,standard tip,flared tip and soft tip for choice. 3. With 2m tube or could be customized,Anti-crush tube can ensure oxygen follow even if the tube is kinked. 4. Size available:Audlt,Pediatric,Infant. 5. Color: green transparent,white transparent and light blue transparent for choice. 6. Packed in individual PE bag.sterilized by EO gas,100 pcs/ctn.