The Zest Nasal Mask is a nasal CPAP mask by Fisher and Paykel. Small, quiet and effortless to fit and use, the Zest™ Nasal CPAP Mask offers superb comfort with it's innovative design. FlexiFit™ Technology provides a greater range of movement at the nasal bridge, simplifying the fitting process while improving the seal and comfort. Unique Glider™ Strap provides freedom of movement while maintaining a seal. The Easy-Clip Zest™ Foam Cushion and Silicone Seal allows one-step connection or removal for quick and effortless cleaning. Designed and contoured using the Fisher & Paykel Healthcare Anthropometric Database to meet the goal of "one size to fit most". The recommended replacement for the Zest™ Headgear and Cushions are every 3 months while the frame should be replaced every 3-6 months! OFFICIAL GUIDES Zest Nasal Size Fitting Guide Zest Nasal Mask Brochure Zest Fitting Instruction Guide Zest Instruction Manual