Strap for Nasal Mask: for wisp headgear is a replacement strap compatible for Wisp Nasal CPAP Mask. Size: Standard (MEDIUM) Comfortable: Made of sturdy, lightweight, breathable soft fiber fabrics, for wisp headgear boasts extra softness. Its stretchy and smooth interior surface, along with stronger Nylon Sticker straps will hold your mask in place. Enjoy better sleep with our headgear. Durable: Our replacement CPAP ventilator headband can be washed repeatedly. Don't need to worry about for wisp supplies' fraying, curling, shedding, delaminating, or other forms of degradation. Convenient: Unhook the Nylon Sticker straps of your old worn for wisp headgear from for wisp mask, put the new one on in the same way, position the hole in the back of your head and tighten to keep the mask in place. Please Note: The straps for nasal mask include replacement cpap headgear ONLY. Mask and other accessories are not included. Colour:Grey Material:Polyester Package Contents: 1 x CPAP Headgear Strap 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.