LB1111 Pediatric Cartoon Oxygen Mask Made of clear, medical grade PVC. Elastic strap with/without latex. Medium concentration, approx 50%. 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.