Reducing irritation, pressure, and discomfort, the Vive CPAP y-strap cover set of four provides a soft, cushioned feel for CPAP and BiPAP mask straps. The breathable lycra strap covers eliminate unsightly red mask lines and stay cool and dry for maximum comfort. Made to fit most nasal headgear straps, the y-straps are easy to secure in place with a strong fastener system and are easy to remove for washing. Wake Up with No Mask Lines: Eliminating redness and mask lines on your face, the Vive CPAP Y-strap set cushions your headgear straps so you can sleep in greater comfort whether you are a stomach, back, or side sleeper. The soft covers promote a proper fit while reducing pressure spots and irritation. Soft, Breathable Material: Allowing heat and moisture to quickly dissipate, the Vive CPAP strap covers are made with a lightweight lycra blend. The chin strap covers ensure your face stays cool, dry, and comfortable throughout the night. Fits Most Headgear Styles: Easy to install with a strong fastener system, the Vive CPAP y-strap mask covers are compatible with most CPAP and BiPAP masks. Each strap measures 7” by 4.5” for optimal coverage of nasal mask straps. Includes Four Reusable Strap Covers: This set includes four CPAP strap cushions for greater convenience. The reusable CPAP mask strap covers are easy to remove and replace for regular cleaning.