Magic paste, adjustable,Good breathability Good sweat absorption,Durable healthysleeplife Style: Head-mounted Scope of use: mask for ventilator Colour:grey Material:nylon+spandex Package Contents: 1 x Ventilator headband 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.