Thank you for viewing. This is for those who want to prevent sweat and foundation stains, and do not need neck coverage. It is thin, using two layers of fabric without any core materials. Set of 2. Please specify the number in the comment section. Size: Outer diameter 14cm, Inner diameter 11cm Materials: A: Knit & Cotton (also cotton/polyester) B: Gauze & Cotton Elastic length: 30cm Reversible. Please adjust the elastic during use. Please understand that this is a handmade item, so there may be slight imperfections in the stitching.