I bought this in the summer and used it when it got cooler, but my child outgrew it quickly, so I'm selling it. My child slept well in it, so I bought the next size up (^-^) My baby is now 3 months old, weighs 7kg, and is 60cm tall, and it became a little cramped, but it was convenient because they could put their hands out and use it. There have been no leaks, but please understand that this is a used item. ———————————————————————— ▼Product Description - Design: Star pattern - Color: White - Zipper: Double zipper - Size S: 3-6kg (newborn to 3 months) Length: 60cm ※Age is an estimate. - Material: 100% cotton - Brand: Coperta 【What is a Swaddle?】A swaddle, which has recently become a hot topic on social media, is a design that recreates the comfort of a mother's womb. Using Coperta's swaddle allows you to gently wrap the entire body, allowing the baby to sleep soundly in the most comfortable position. Furthermore, it has the effect of calming the "Moro reflex," which interferes with the baby's sleep, and is said to be helpful for newborns' quality sleep. 【Unique Design】Unlike traditional swaddles that fix the baby's arms and legs to prevent the Moro reflex, Coperta's swaddle's unique design allows the baby to sleep soundly in a comfortable "hands-up" pose. 【Excellent Absorbency & Breathability】Babies sweat a lot. Coperta swaddles are highly breathable and do not get stuffy, and they are also highly absorbent, so babies who sweat a lot can stay comfortable. If you don't want it to touch the skin directly, you can wear the swaddle over clothing, so there is no need for blankets, making it safer and better quality sleep for the baby. 【100% Organic Cotton】Coperta's swaddles use 100% natural cotton that gently wraps the delicate baby's skin, and of course, it has passed the formaldehyde test. There are no toxic dyes such as fluorescent agents and bleach, so it is safe for the baby's skin to touch directly or for the baby to put in their mouth. 【Roomy Leg Area + Double Zipper】The leg area is roomy, and it also uses a double zipper, so you can change diapers while the swaddle is on! Also, the upper zipper part has a cover to prevent injuries from the zipper.