This is a set of 5 handmade smooth masks designed to be breathable and prevent glasses from fogging up, with an open space at the bottom. The outer fabric is wrinkle-resistant Coolmax, and the lining is a sturdy beige cotton-linen blend. Materials: Outer fabric: Coolmax Lining: Cotton-linen blend Size when folded in half: Approximately 11 x 13 cm The elastic ear loops are made of soft, round elastic. Please wash inside out in a laundry net. Please understand that these are handmade before purchasing.