The materials are really good, and it is very well made. It has stretchy neoprene that is on quality sports products, soft minkee, and the calendar and stickers and included parent guide are thoughtfully designed. Nipit is so easy to put on, and has optional “easy locks” (zip ties) that let you fasten it so it is hard for your child to get off. My daughter, who is five, really liked the colors and asks for it on her own before bed. Wow!