Oxygen Mask With Reservoir Bag Made of clear,medical grade PVC With reservoir bag With adjustable nose clip, elastic strap with/without latex Oxygen mask with or without check value Color: green transparent, white transparent and light blue transparent is available. Length: with 2m tubing, different length can be customized, Anti-crush tube can ensure oxygen follow even if the tube is kinked. Packing: packed in individual pe pack.50pcs/carton or 100 pcs/carton. Anti-crush tube Cat. No. Type LB131000 XS (Neonate) LB131001 S (Pediatric Standard) LB131002 M (Pediatric Elongated) LB131003 L (Adult Asian) LB131004 L+ (Adult Eurpean) LB131005 XL (Adult Elongated)