standard - 400445. Quiet and Lightweight CPAP Interface with Headgear . The device comes with wraparound headgear that will keep the interface in place, and the Zest Q's FlexiFit technology provides you with a comfortable interface that will contour to your face without leaking. The interface also comes with a flexible tube, allowing you to sleep in any position you like. . FlexiFit Technology . Fisher and Paykel's FlexiFit technology adjusts to a wide range of nasal and facial shapes, allowing the device to seamlessly adjust to faces of all sizes. FlexiFit technology combines two layers of cushion support: the inner, foam cushion supports and cushions your face, while the outer shell prevents leaks. . Glider Strap . The glider strap is an anti-leak system that lets you move freely at night while maintaining an effective seal, even if you're tossing and turning all night long. The strap adjusts the position of the interface even as the interface moves at night, allowing you to keep a tight seal. . Elite Air Diffuser . Fisher and Paykel redesigned the air diffuser to reduce the noise associated with breathing through a CPAP interface. The Zest Q has slightly different hole formations in the elbow than previous models, allowing for air to diffuse away from you and your partner. . Key Features . It's So Quiet, They Put "Q" In The Name . Sleep on Your Back or on Your Side . For Her Versions Available . Reviewers Tip: . Be sure to set the ramp on your machine to make sure you're getting enough air. . Fitting your Zest Nasal CPAP Interface . Cleaning your CPAP Interface . FAQ . Can I get a For Her in a normal size . No, the For Her models feature smaller designs. .