Small: 5-12 lb New Without Tags, Pet Free/ Smoke Free Home, No Piling or Snags, 2 Available SNOO Sack and SNOO Comforter Sack (our warmer wrap), were specially designed to be used in SNOO Smart Sleeper to help babies sleep safer, longer, and happier! And because SNOO Sack was created by world-renowned pediatrician Dr. Harvey Karp, you can trust that every detail was designed with baby safety and parent sanity in mind! Machine wash in cool or cold water with like colors. Never use hot water or chlorine bleach. Tumble dry on a low heat setting, making sure to dry the sack completely or air dry for best results! Please Note: Before putting SNOO Sack in the washer, always attach the Velcro arm bands & leg flap to each other and zip the sack completely closed. That will avoid damage that might be caused by Velcro clinging to other items in the load.