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: Designed to perfection, this product adopts an ergonomic shape that conforms to the baby's body. It envelops the baby in a 360-degree wrap, allowing for unrestricted movement even when the baby turns over during sleep. Note: When washing, ensure that 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 are detachable, easily adjustable via the zipper according to your preferences. This newborn swaddle not only keeps your baby warm effectively but also enables their hand movements, providing added convenience for playtime and ensuring a joyous winter experience. Two-Way & Side Zipper: This newborn swaddle features a convenient two-way zipper, allowing you to adjust the clothing to your comfort. The side zipper design of this baby sleeping bag facilitates easy diaper changes. It also minimizes the chance of your baby feeling cold due to gaps during diaper changes. Suitable for both boys and girls, it serves as a wonderful gift option. 100% Cotton: Constructed from premium, pure cotton fabric, this material boasts excellent skin-friendliness and a delightful touch. The generously padded sleeping bag is filled with 2.5 Tog, making it ideal for spring, autumn, winter, or cooler weather. The velveteen fabric creates a soothing sleeping environment for infants. Moreover, this newborn sleep bag makes for a splendid birthday or Christmas gift for newborn babies.