These masks have comfortable elastic cord ear loops. They have different juvenile beach prints on either side so that kids can choose which side to wear on the outside–just remember to launder them before using the other side. They are 100% cotton and may be washed by hand or machine. Please specify the gender of the child or if you want a particular print. There are many more prints and an assortment of neutral gender fabrics will be used if not specified. Small masks fit toddler to 4 years old.