Cozy & Warm: Micro fleece sleep sack is super soft and cozy to touch, friendly to the sensitive skin of babies. Long-sleeved wearable baby blanket reduces the risk of getting cold, ensures free arm movement, and provides more warmth and security for your little one when napping in cool summer A/C room and sleeping at chilly autumn and winter nights. Plush baby sleep sack is suitable for all seasons. Safe Two-Way Zipper: Unzips from the top and bottom, easy and convenient to place your baby in or out of the sleep sack and change diapers. Zipper protector on the top and along the zipper teeth to protect your baby's jaw and belly from being scratched by zipper head. Roomy baby sleeping bag has enough room for kicking but can not be kicked off, protecting your baby from getting cold when sleeping or crawling around on the floor.