HALO SleepSack is an award-winning wearable blanket for safe sleep. It's also the recommended next step after SleepSack Swaddle for a seamless transition without losing sleep. Design details include a zipper that opens from the bottom for easy diaper changes, and a roomy, extra long sack. That means it's hip healthy and you won't have to size up as quickly. 100% cotton is soft, breathable and especially gentle on baby skin. Key Features/Details: ● Wearable blanket for safer, better sleep ● Keeps them cozy and can't be kicked off ● Zipper opens from bottom for easy diaper changes ● 100% cotton is soft, breathable and gentle on skin ● Hip healthy design; approved by the International Hip Dysplasia Institute ● Extra length (so you don't have to size up as quickly!) ● Comfy neckline with zipper covers to prevent scratches ● SleepSack brand is used in hundreds of hospitals nationwide ● Machine washable ● Use over regular sleepwear ● 0 - 24 months; 4 sizes available ● 0.5 TOG ● Imported TOG: 0.5 Product Care: Turn inside out and close zipper before laundering. Machine wash cold with like colors on gentle cycle. Close zipper before washing. Tumble dry low. Do not bleach, iron or dry clean. Safety Reminder: Always place your baby on their back for sleep. And never place anything in the crib with your baby. No pillows, bumpers, toys or loose blankets. The American Academy of Pediatrics recommends the use of wearable blankets to keep your baby warm.