Little Unicorn sleep bags are designed to make sleep safer and more comfortable for your baby. The lightweight and breathable cotton muslin helps prevent overheating and allows baby to move naturally. Included are parent-loving features like a two-way zipper for easy nighttime diaper changes, and machine washable cotton muslin that gets softer with every wash. 1 TOG Encourages safer sleep as baby grows 2-way zipper for easier diaper changes Premium muslin, soft on baby's skin Lightweight and breathable fabric to help prevent overheating Please note that slight variations in the richness and depth of color in our prints may occur due to the nature of our manufacturing process Size Guide: 20-28 lbs 28"-32" length 12-18 months Care: Wash with like fabrics Machine wash cold Do not iron Do not bleach Tumble dry low