IDEAL SLEEP SACK - BubblePanda baby sleep sack is made from luxurious rayon made from bamboo, known for its buttery softness. This hypoallergenic and breathable fabric helps regulate your baby's body temperature, wicking away sweat to create a soothing and comfortable atmosphere for babies' sleep. | SUPER SOFT FABRIC - We've carefully blended 97% rayon made from bamboo with 3% spandex to create an exceptionally soft and gentle fabric that caresses your baby's delicate skin. This fabric surpasses cotton and wool in softness, while also offering superior breathability and moisture absorption. | SAFE FOR BABY - We prioritize your baby's safety. The sleep sack features a deeper and narrower neckline to prevent any loose fabric that could pose a suffocation hazard. A zipper protector shields your baby's face from scratching. Our breathable fabric reduces the risk of overheating, making it suitable for year-round use. | DESIGN WITH CARE - Our toddler sleeping sack are designed to provide optimal comfort for babies and convinience for parents. 2-way side zipper makes midnight diaper change easily. Stretchy roomy leg room allows your baby to sleep in the frog-legged position, move around freely, but cannot be kicked off, so baby stays warm all night and promoting healthy hip development. The open feet design allows for natural movement, making it ideal for active babies who love to crawl, walk, and play. | MACHINE WASHABLE & DURABLE - Our sleep sacks are designed to be machine washable, making cleaning a breeze. The high-quality rayon made from bamboo fabric and reinforced stitching ensure durability, while the extra-long leg room allows for extended use as your baby grows.