ResMed S9/S10 Series CPAP Machine SlimLine TubingSlim and flexible, the SlimLine tube is 40% lighter, 20% thinner and takes up 35% less space than ResMeds standard tubing. Features: The streamlined design of the tube makes it easier for patients to move around in bed without pulling on the mask, so their mask and seal stay stable. Handy smart fit cuff design makes it simpler to attach and remove. Travel friendly tube for use at home, in hospital or while traveling.