I haven’t yet seen a nappy that fits well “from birth to potty”. If you want to start straight away, investing in newborn nappies is a must in my opinion. A well-fitting nappy should not restrict movement. The best test? See how your baby moves without a nappy – this is exactly how they should be able to move with the nappy on. To ensure that happens: slide elastics into the groins and make sure the nappy does not go down on the thighs. Ideally the nappy does not cover belly-button. Choose a nappy that is not too wide between the legs. Adjust the rise length, so nappy does not dangle between baby’s knees.