LB1310 0xygen 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 flow even if the tube is kinked. Packing: packed in individual PE pack. 50 pcs/carton or 100 pcs/carton.