CPAP strap cushions and cpap liners used Soft and breathable material provides comfortable support to your face, preventing irritation or discomfort from CPAP headgear straps and mask silicon liner.keeps dry all around the the borders. Comfort and Soft CPAP Mask Liners can redistribute pressure more evenly to reduce mask pressure and cheek Indentation discomfort,cpap mask liners this sound of air to escape from certain areas of your mask. This often wakes you out of a sound sleep.cpap mask liners Let you sleeping much more comfortably and without interruption. CPAP strap covers another function that can protect your cpap strap from wear and broken, keep the cpap strap stretch and elasticity of durability, can extend cpap strap useful life. It fit well with for F20 size Full Face CPAP Masks and ,for Full Face Replacement Cushion, Don't worry about choosing a size.This CPAP mask liners is great for both avoiding "red marks" from CPAP mask and also extending the life of the Full Face Replacement Cushion by protecting them from constant skin contact. There are Which can be washed and used repeatedly Easy to be cleaned and .Easy to put on and clean. Please note: There may be slight color differences or variations in the actual product, but this does not affect its use. Please do not mind this. Thank you! Color: Blue Material: Fleece + Polyester Size:One size Package Contents: 4Pcs x CPAP Mask Liners 4Pcs x CPAP Strap Covers Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.