This is a six-layer gauze sleeper made by a handmade artist. It's a good thickness and can be used year-round except for summer. It's a type that can be used for a long time, from around 0 to 4 years old. It also has snaps at the crotch, so it's easy to use because it won't shift even for children who move around in their sleep. The design is also cute with a Nordic-inspired wavy pattern. Another advantage is that you can detach the shoulder snaps for separate drying when washing. There is a slight fraying in the center, so please consider this if you are interested. Marimekko Nordic Finlayson