100% organic cotton - no poly - 2 sizes for a great fit. INFANT (8-21lbs), TODDLER (22-35 lbs). The unique adjustable snap design is excellent at containing all kinds of poop, and they absorb better than any others I have tried. Easier to use than non fitted diapers. Use with Aristocrat at night for a 100% breatheable system or during day with cover. Fun Prints and COLORS: Mint, Pink, Sky Blue, Yellow, Seafoam, Heart Print, Teddy Print, all natural. Outer only is colored - insides will always be natural - no dyes against baby.