1, materials: nylon 2, size: 18x8.5cm. 3, 6mm elastic band, adjustable buckles is optional. 4, 3mm sponge & non-woven fabric. ... )Customized sizes are also welcome.Materialssatin+polyester/non-woven+sponge+elastic bandElastic BandLength : 32cm, adjustable buckles are optional.Sponge3mm thickness. White ...