Features: -With its unique reverse-zip construction, this sleeper allows for quick and discreet diaper changes without waking baby -Exceeding international safety standards, the sleeper will quickly become the most practical garment for baby's nights -0.7 TOGS: Room temperature 23-27 Celsius / 73-81F 0-6 months: intended for babies whose weight is from 4.5 to 7 kg / 10 to 16 lbs and height of 23" to 26" 6-18 months: intended for babies whose weight is 7 to 11.8 kg / 16 to 26 lbs and height of 26" to 34" 18-36 months: intended for babies whose weight is 11.8 to 18 kg / 26 to 40 lb and height of 34" to 40" Composition: 100% cotton muslin