My baby is 4 months old now, so I no longer need these. This 100% cotton swaddle blanket, with its open-knit design, evokes the gentle breeze of summer. This lightweight and breathable swaddle is designed with the utmost care for your baby's delicate skin. The delicate open-knit creates a unique flexibility and stretch, gently enveloping your baby. Even under the summer sun, the open-knit allows air to pass through, acting like a mesh, naturally regulating your baby's body temperature and supporting comfortable sleep. It's also perfect for the humid rainy season! The L size (right) is unused. The M size (left) was used for about a month. It helped my baby sleep well. Purchased from Rakuten for 1,990 yen each.