Features: 1,Alvababy Newborn diapers are suitable for babies less than 12 pounds (a rough guide for reference only). 2, Length of Diaper: 13 in length X 10.25 in width. 3,Insert dimension: approx 12.4 x 4.4 4,Hip snaps and crossover snaps to prevent wing droop. 5,Washable, waterproof and breathable. 6,Diaper with pocket to hold the insert. Materials: 1,Outer layer: polyester with waterproof and breathable TPU. It\'s convenient for mammy to carry baby while taking a walk or doing chores. 2,Inner layer: Faux suede cloth inside, it does not hold moisture itself, the moisture get drawnaway to the insert to keep your baby dry. Tips & Care: 1,Wash before first use.Please wash colours separately. 2,It usually will take a few washes to reach its full absorbency (could be 6 washes or more) 3,Place the insert inside the nappy through the open pocket in the back. 4,Liquid will be absorbed through the inner layer of the nappy to the insert 5,More than one insert may be needed when sleeping or when necessary 6,Nappy should be changed every 2-3 hours, and when damp, to prevent nappy rash. Washing Instructions: 1,Remove and rinse off the residuals (knock solids into toilet). Untie insert from diaper shell and wash separately. 2,Hand wash or machine wash, less than (no hotter than 30). 3,Hang them up to dry in the sun ), or Low tumble dry. 4,Rainy season or wet weather may make it moldy, please keep it dry. 5,No bleach, No softener, DO NOT boil the cover.