97% Rayon made from bamboo, 3% Spandex Imported 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. 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.（Ensure the baby is intended to be dressed in inner clothing before being put into the sleeping bag.） BubblePanda's Baby Sleep Sack is a game-changer for both babies and parents. Crafted with care, it's made from ultra-soft and hypoallergenic rayon Made from Bamboo, ensuring a cozy and breathable environment that regulates body temperature and wicks away sweat. The super-soft fabric is gentle on delicate skin, outperforming cotton and wool in terms of softness, breathability, and moisture absorption. Safety is paramount, with a deep, narrow neckline and zipper protector, while the breathable fabric prevents overheating. Designed for convenience, the 2-way side zipper simplifies midnight diaper changes, and the roomy leg space promotes healthy hip development. Plus, it's machine washable and built to last.