Respironic Tubing is lighter and much more flexible than standard tubing. Its ultra-light design provides a more forgiving connection to the device so it is less likely to pull the interface and disrupt the seal! The ergonomically designed cuff is easier to grasp and remove from the mask or machine. Specifications: Shipping Weight: 4.8 ounces Product Dimensions: 8 x 6 x 2 inches Product weight 3.2 ounces Made in China Comes In Respironics sealed packaging Rubber Ends: Thermoplastic Elastomer Wall: Metallocene Polyethylene Helix: Polypropylene