Safe & Sustainable: We’re turning trash into treasure! The Esembly cloth nappy Outers are Standard 100 OEKO-TEX certified and made of 100% post-consumer plastic bottles. Outers are free of lead, BPA, PVC, and phthalates, making them perfect for your baby's sensitive skin. Landfill-Free And Saving: Instead of going through endless packs of disposables (6500+ if we’re talking numbers), with Esembly you only need 20-24 nappies Inners, and 6 Outers (in each of the 2 sizes) from birth through to potty training. This not only saves the planet from nappy waste but saves you money too!. Nappy Cover And Swim Nappy: Outers are designed to be used as a nappy cover, nappy wrap, nappy shell, plastic pants, rubber pants over Esembly Inners (sold separately), or prefolds, flats, contours, and fitted nappies. Outers can also be used on their own as a Swim Nappy!. No Leaks Or Blow-Outs: Avoid the infamous nappy explosions! Esembly nappies are made of 2 leak-proof parts. The Esembly organic cotton Inner (sold separately) provides the absorbency and the Esembly Outer layers over the Inner for waterproofing and containment. Together they make a complete, blowout-proof cloth nappy!. Stylish Comfort: Waterproof and breathable, soft, stretchy, and trim-fitting. The Outers come in two sizes: Size 1 (7-17lbs) and Size 2 (18-35lbs). Two rows of poppers allow you to separately adjust the waist from the legs, accommodating big round bellies and tiny little newborn thighs, or vice versa.