ღProduct Features Made with 100% cotton fabric, super soft and lightweight, the two-layer cotton has a 1.0 tog rating, which is perfect for room temperatures between 68°F and 75°F. This keeps baby warm and cozy, while offering you the peace of mind that comes from not having loose blankets in the crib. The swaddle design mimics the mother's womb, give baby safer feel environment. Ensures your baby's have a longer sleep. Our two-way zipper pulls from the bottom of the wearable blanket, making for easy midnight diaper changes and keeping the zipper away from your baby’s face. Just take 5 seconds to wear the sleep sack, give your baby a long sleep and make your baby more stronger. ღProduct Instructions Step 1.Open the sleeping bag, put the baby in the sleeping bag, zip up. Step 2. wrap the left wing tightly around the baby's arm. Step 3: Secure the right wing to the Velcro area to complete the wrap. ❤️Warm Tips❤️ 1.Please choose the right size according to your child's height to avoid the danger of suffocation. 2.Any quality problems or dissatisfaction, please contact the after-sales team to return or refund. 3.You can contact our team for development if you have a color or style you like.