This soft, pre-washed sleep sack is designed lightweight for year round crib comfort. Ideal for the transition from the swaddling stage. Makes a perfect way for your baby to safely and comfortably hit the sack, and keep covered and warm no matter how much they wiggle. Details, details - Made by aden + anaisShow 'em what you're made of - 100% cotton muslin construction is lightweight, breathable and gets softer with every washCare instructions - Machine washableStyle options - Orange Fish - Yellow Bees - Blue Stars - Pink StarsSizes - 0-6 mos. - 6-12 mos.