Our baby sleep sack boasts a double-layer design, combining a 100% cotton lining with plush fleece fabric to deliver a gentle, skin-friendly touch for your baby's sensitive skin. Our winter baby sleep sack with premium smooth two-way zipper, parents can effortlessly change diapers during the night, ensuring uninterrupted sleep for your baby. What's more, the zipper protector at the top shields your baby's delicate chin from any zipper scratches. Your baby's comfort and safety are our top priorities! The toddler fleece sleep sack offer ample room for kicking but can not be kicked off. This can promotes baby's healthy hip development, while the sleeveless design reduces the risk of overheating, ensures free arm movement, and provides lasting warmth for your little one. The fleece sleep sack with raised dots resemble mom's touch, giving your baby a familiar sense of security and soothing baby to sleep through the night.