The premium Performance Tubing for your CPAP or BiPAP machine is lightweight, flexible, and preferred by CPAP users for the relief of the tugging, pulling, and tangling experienced with standard CPAP tubing. Respironics' Performance Tubing works well with almost all CPAP, APAP, BiPAP and BiLevel systems from all known brands. It is compatible with smaller lightweight CPAP CPAP Masks, as it is less likely to pull on the CPAP Mask and disrupt the seal. Respironics' new Pure White Performance 19mm Diameter Tubing with 22mm ends is 20% lighter and much more flexible than standard tubing.