HIGH QUALITY This is a 1 Tog summer model baby sleeping bag for room temperatures above 70 F 100 woven cotton outer shell very soft 100 jersey cotton inner lining and high quality YKK zippers and snaps Synthetic fibers like fleece and polyester are cheap but absorb moisture in very small amounts and hence are the least desirable fabrics touching your babies skin With our bags only soft 100 cotton touches your babys skin allowing for as comfortable sleeping experience as possible SAFE SLEEP Baby sleeping bags should be sleeveless to aid the heat loss and air circulation Babies sleeping under traditional blankets rarely sleep with their arms inside Sleeveless design reduces the risk of overheating Your baby is covered and warm all night No more kicked off covers means your baby sleeps more comfortably Adjustable armholes Available in three sizes 311 1024 and 243T months SIZING Please measure your little one from head to toe and match the length of your baby with the corresponding size next to it on our sizing chart Please do NOT buy one size up The bag will not fit until your little one reaches at least 2 to 3 months for the small size 30 for the medium size and 37 for the large size It is generally recommended to swaddle your infant for the first 2 to 3 months or when they start to roll Choose a sleeping bag thats suitable for the season SPACIOUS and PRACTICAL Generous bell shape sack design allows ample room for kicking but cannot be kicked off so baby stays warm all night If babies are comfortable they tend to sleep longer So enjoy that extra rest Side zipper with open and foldflat design for easy diaper changes Side zipper avoids that your baby is chewing on it Machine washable and can be tumble dried on low heat SUMMER WEIGHT This is a lighter weight summer model with two layers of cotton The recommended nursery nursery temperature should be between 70F to 78F A Baby Sleeping Bag surrounds the baby providing insulation from both below and above and also a warm pocket of air around the baby