outer lining 100% cotton stuffing 100% polyester Imported Warm Sleep Sack: Our toddler sleep sack with legs is designed to replace loose blankets. With a 1.0 TOG thickness, this sleep sack ensures warmth and comfort for all seasons, keeping your little one cozy throughout the night and promoting better sleep. UPGRADED THOUGHTFUL DESIGN: It features double zippers that work in both directions for easy diaper changes and easy on-off. This toddler sleep sack also comes with 2 large pockets and zipper protection to prevent scratching. We have added leg length adjustment snaps to accommodate early walkers and toddlers. COZY AND SOFT: The sleeveless design of the sleep sack keeps toddlers warm and comfortable. It is breathable, allowing for easy movement of little ones. FIT FOR 12M-7T: Baby sleep sack with legs has 4 sizes, suitable for sleep sack 12-18 months, sleep sack 18-24 months, sleep sack 2t, sleep sack 3t, sleep sack 3t-5t, sleep sack 5t-7t. All sizes 12m-7t are available to support your toddler's growth. WARM TIPS: This sleep sack is machine washable. We recommend using the gentle cycle or hand washing. Do not bleach, and iron at low temperature if needed. Toddler Sleeping Sack, Baby Sleep Sack with Legs, Toddler Sleep Sack, Wearable Blankets