Your mask will never slip off with the Fila Mask Retainer. The retainer features plastic clamps that will hold your mask straps, so the solid elastic strap can be worn around your neck. You can adjust the elastic strap with the plastic toggle, if you want your mask to fit looser or tighter. You can take the mask off and leave it hanging around your neck too, to prevent losing your mask! 

Material: 100% Polyester 

One size fits all.