Safe Sleep - Our fleece baby sleep sack are made of comfortable and high quality 100% microfiber polyester, providing a gentle, skin-friendly touch for your baby's sensitive skin. Certified by the Consumer Product Safety Commission(CPSC), these baby sleeping bags ensure a secure and safe sleeping environment for your little one.

Softer & Warmer - Our 2.0 tog sleep sack is suitable for indoor temperatures of 64-70°F (18-21°C) during the fall and winter. This flannel sleep sack has a fine, soft surface fleece with a delicate, rich feel and a soft, while the interior fleece is soft and long, helping your baby lock in the warmth.

Convenient 2-Way Zipper - Unnivoll 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!

Roomy Spaces - The toddler fleece sleep sack offer ample room for kicking but can not be kicked off, which can promote the health of the baby's healthy hip development. Additionally, our long sleeve fleece sleep sack reduces the risk of getting cold, ensures free arm movement, and provides more warmth and security for your little one when sleeping at chilly autumn and winter nights.

Baby Essentials - The fleece baby wearable blanket come with 2 pack, can be machine washed and dried at low temperatures, which is convenient for the baby to change at any time. Four size options available for your choice: S(0-6 months), M(6-12 months), L(12-18 months), XL(18-24 months). Please measure your baby's height and weight and refer to our size chart carefully before choosing.