Dear customer, Thank you for choosing our products. If there is any problem with our products, please contact us through the order information. We will be happy to serve you and solve it for you as soon as possible within 12 hours, thank you! The fastener design allows for better connection to the baby bodysuit, which is rugged and easy to use. Made of soft cotton material, the baby is breathable and comfortable. Our tights extenders can help extend the reach of your clothes, help your mom save a lot of money, and make baby clothes yourself. one sizeOur extenders are available in colors for mothers to choose from, which are both sweet and one sizebeautiful. Machine wash,tumble dry,but no bleach.