18cm x 18cm 17.5cm x 17.5cm Please allow for some margin of error. One piece is made with two layers of the same double gauze on both sides. The other piece is made with two layers of double gauze + waffle fabric, so it is thicker and has a sturdy feel. Double gauze becomes softer with each wash, and has a touch you'll want to keep touching. This is a handmade item by an amateur. I would like to sell it to those who understand.