Supervised by a nursery school teacher. Mahou no Okurumi Swaddle Mesh, Size S and M. Size S was used in rotation with 4 other swaddles for about 4 months. Size M was used once. This mesh type can be used year-round, and was very good for babies who get hot easily even in the summer. My baby slept well when swaddled, and it was very helpful. It can still be used, so I'm selling it! I am also selling other swaddles, so please take a look.