Approximately 8cm in diameter, set of 10 (cannot be replaced) Only two layers of double gauze. No interfacing or other materials are used inside. Plastic snaps are used. The snaps are placed on the inside so they don't touch the skin. Reinforcement fabric is used inside the snap area. (Not visible from the outside) ⭐︎I am also selling gauze handkerchiefs. These are made using fabric scraps that are too small for handkerchiefs, so they are offered at a lower price.⭐︎