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, a cozy and safe sleeping solution for infants aged 6-18 months. Designed by Morrison Outdoors, this mummy-shaped sleeping bag is perfect for backpacking and 3-season camping, featuring a 100% Ripstop Nylon shell and 650 fill-power RDS-Certified White Duck Down insulation. With a temperature rating of 20-60 F (-6-15C), it ensures a comfortable sleep environment in various conditions. The sleeping bag is 31in (80cm) long, and its adjustable cuffs provide a customized fit. Care instructions include washing inside a mesh or fabric laundry bag, using mild powdered detergent, and tumble drying with 2 clean tennis balls. Morrison Outdoors, dedicated to creating high-quality and safe baby sleeping bags, offers innovative designs and materials for a comfortable and secure sleep environment for young campers.