Sized and Shaped Nappies - although not always the most cost effective, they do offer the best fit and containment. Choose from a range of fantastic brands, such as Close and TotsBots, pick from stripes and plain colours to suit your little one. Sizes available; Newborn, Size 1, Size 2 and Size 3. Size ranges differ between different brands but as a guide the below can be used:Newborn: 5-12 lbs; Size 1: 6-18lbs (approx. 6 months); Size 2: 15-35lbs (6-30 months); Size 3: 35lbs+.