Perfect size: suitable for babies with a height of 66-95 cm and babies aged 3-48 months; please choose a suitable size according to the baby's height. Removable sleeves: The sleeping bag adds a cute animal print design, which can easily attract the baby's attention. The detachable long sleeves prevent overheating and determine whether the baby needs sleeves according to the indoor temperature. Double zipper and lengthened design: Double zipper design is easy to put on and take off, the neckline wrap design, effectively protect the baby's chin, and the lengthened sleeping bag design provides enough space for the baby to kick the legs. Warm baby sleeping bag: thick and warm inner lining is suitable for cold winter, provides constant temperature sleep for the baby, prevents the baby from kicking the quilt, and gives parents a peaceful sleep all night. Comfortable material: The baby winter sleeping bag is made of 100% high-quality cotton, soft and breathable, providing a wonderful and comfortable sleep for the baby,suitable for 0-20?.