nylon Imported WARM: Down-like synthetic insulation creates thick channels of warmth between the baby and the outside air. VERSATILE: Patent-pending design comfortably fits babies from 6 months to 18 months old. Zips from the bottom-up for easy diaper changes without removing the sleeping bag. Machine-washable. SAFE: Designed to meet all AAP-recommended guidlines for safe infant sleep. Has no hood or drawstrings, and the snug, secure collar keeps babies from slipping inside. COMFORTABLE: Details like a fleece zipper flap, enclosed footbox, and insulated draft tube keeps baby comfortable and warm all night long. LIGHTWEIGHT: Weighs just 14 ounces (391 grams) and packs down to the size of a large water bottle. Discover the Little Mo Baby Sleeping Bag from Morrison Outdoors, designed for 6-18 month old adventurers. This 3-season sleeping bag is perfect for backpacking and camping, with a 20F to 60F (6C to 15C) temperature range. Made from 100% Ripstop Nylon with 650 fill-power RDS-Certified White Duck Down insulation, it ensures warmth and comfort in the great outdoors. The sleeping bag features adjustable cuffs, providing a custom fit for your little one. It measures 31 inches (80cm) in length and is designed to fit infants up to 2.58 feet (78.5cm) tall. The shell material is 100% Ripstop Nylon, offering durability and resistance to wear and tear. The bag weighs 8.7oz (247g) and has a fill weight of 3.88oz (110g), making it lightweight and portable. Care instructions include washing in a front-loading machine with mild powdered detergent or down wash, and tumble drying with 2 clean tennis balls. Morrison Outdoors is dedicated to creating safe and comfortable outdoor gear for babies and toddlers, with a mission to make the outdoors accessible to young children and their families.