It's adjustable in both size and absorbency. Adjust the size as your baby grows. You can use it on most babies that range from 10-35 lbs (4.5-16 kgs). Stuff it with as little or as much absorbency as you need to get you through a quick trip to the store, a long car ride, or maybe even overnight. The diaper has two rows of snaps for adjusting the size as your baby grows. An outer layer of laminated polyester knit keeps wetness in, and an inner layer ofsilky soft bamboo/organic cotton blend. All diapers come with 2 inserts made with a blend of organic cotton and bamboo. The small insert consists of 4 layers for use when your baby is at the smallest size setting. They can also be used as doublers when extra absorbency is desired. The longer insert consists of 6 layers of organic cotton/bamboo blend that is trifolded and is adjustable in length. Inserts can be used inside the pocket of the diaper or laid on top. Diaper Fabric Content: Outer layer: 100% polyester laminate Inner Lining: 70% bamboo viscose, 20% organic cotton, 10% polyester Inserts Fabric Content: 70% bamboo viscose, 30% organic cotton Sizing Information: Weight Range: 10-35 lbs (4.5-16 kg) Waist: 9-21\" (23-53 cm) Thighs: 4-12.5\" (10-32 cm) Rise: 13.5-18.5\" (34-47 cm) Made By: Swaddlebees Made In: USA