Swaddle up 1.0 tog size small NIB 8-13 pounds Unique patented wings allow natural ARMS UP position ARMS UP allows true SELF-SOOTHING = more sleep Swaddle in seconds with no breakouts Twin zipper for easy diaper changes No loose layers to kick off during sleep This 1.0 TOG Material is ideal for room temperatures between 68°F & 75°F Single layer of fabric to reduce risk of overheating