Make your baby's sleep "extra" cozy with the Cozy Plus 100% Cotton Muslin Sleeping Bag by aden + anais. Plush, comfy, and perfect for taking the chill out of cold nights. Made to be worn over a baby's pajamas. Bottom and side zippers for easy changes. Plush, comfy, and perfect for cold nights, the Cozy Plus 100% Cotton Muslin Sleeping Bag by aden + anais will make your baby's sleep "extra" cozy Made to be worn over a baby's pajamas, eliminating loose blankets for a safer sleep 100% heavyweight cotton muslin shell Bottom and side zippers make changes easy Size small is designed for up to 6 months, 23" - 28" H and 10 - 18 pounds Size medium is designed for 6 - 12 months, 26" - 31" H and 15 - 24 pounds Size large is designed for 12 - 18 months, 30" - 34" H and 22 - 28 pounds Machine wash Imported SKU # 42189459