Size And After-sales Service: S (0-6Month), Clothes Length 71cm, Chest Circumference 32cm, Recommended Height 50-70cm, Weight 140g. M (6-12Month), Clothes Length 81cm, Chest Circumference 33cm, Recommended Height 70-85cm, Weight 165g. L (12-18Month), Clothes Length 91cm, Chest Circumference 34cm, Recommended Height 85-110cm, Weight 200g. You can contact us at any time if you have any questions before or after your purchase. We will answer your questions and give you the most suitable solution. Flexible Design: This product features an excellent shape that conforms to the baby's ergonomic design. It wraps around the baby's body in a 360-degree manner, ensuring that the baby doesn't feel restricted when turning over during sleep. Note: When washing, make sure the water temperature does not exceed 50 degrees. Do not bleach or dry clean. 2.5 Tog & Detachable Long Sleeves: The long sleeves of this baby sleeping bag can be easily detached or installed by adjusting the zipper to suit your preferences. This newborn swaddle not only effectively keeps your baby warm but also facilitates their hand movements, making it more convenient for them to play and enjoy a joyful winter. Two-Way & Side Zipper: This newborn swaddle is equipped with a two-way zipper, allowing you to adjust the clothing according to your needs, enhancing comfort. Designed with a side zipper, this baby sleeping bag makes it convenient for you to change your baby's diaper. It also reduces the chances of your baby feeling cold due to the gap between diaper changes. Suitable for both boys and girls, it serves as an ideal gift. 100% Cotton: Crafted from high-quality pure cotton fabric, this material is extremely gentle on the skin and provides a comfortable touch. The thickly padded sleeping bag is filled with 2.5 Tog, making it suitable for spring, autumn, winter or cool weather. The velveteen fabric creates an optimal sleeping environment for infants. Moreover, this newborn sleep bag makes for a perfect birthday or Christmas gift for newborn babies.