Outer material: Cotton Inner. Material: Cotton + polyester + tpu. Sleep Training Underwear with cotton have great breathability, will give baby a very comfortable feeling , and it can be worn in all seasons like ordinary pants.Underwear Potty Training are made of cotton material ,with waterproof layer on crotch, cloth training pants is safety, soft, comfortable, breathable, washable and reusable. It will give your little baby and yourself more confidence. cute Potty Training Underwear Set make it easy for your child to start potty training. And leg holes are neither too loose nor too tight, it will not leave any trace on legs. Also very easy to pull up and down.Our Potty Training Underwear Set are designed so your little 1 will feel accidents and be compelled to act upon small leaks. This is a big change for them.machine washable.Potty Training Panties can hold small accidents and then need to wash and they donot fade and shrink after wash. Plastic underwear for toddlers are reusable and save money and environmental. Potty training pants is a transitioning product for babies who need to switch from diapers to underwear. It is very helpful for you to start toilet training on your child.