Ambu SPUR II Infant BVM w/Infant Mask & Oxygen Reservoir Bag. The term â€œAmbu Bagâ€ is synonymous with BVMs (bag, valve, masks). The Ambu Spur II resuscitator is single-use (disposable) and is made from a SEBS polymer instead of PVC. Includes one resuscitator with an adult mask, 7â€™ of oxygen tubing, oxygen reservoir bag, and an instruction booklet. Not made with natural rubber latex.