Polyethylene Pull Tite Drawstring Bag, 1 Case of 1000 Group Activity Units Packaged in a plastic bottle Nasal Cannulas Packaged in a plastic bottle with a twist off cap Outstanding acoustics with better audibility of high frequency sounds (adult side firm pressure) * Tunable diaphragm: Hear high or low frequency sounds by slightly adjusting pressure on the chestpiece * Standard Finish Chestpiece Black Tube Stainless Stem and Headset * Dual lumen tubing: Two sound paths in one tube eliminates the rubbing noise of traditional double tubes * Next generation tubing lasts longer and resists stains * Not made with natural rubber latex or phthalate plasticizers * Headset is easily adjusted for individual fit and comfort * Angled eartubes align with ear canals * Seven year warranty provides greater peace of mind Meet FDA requirements for use in food applications Economical substitute for cloth drawstring bags