Can I change the diaper size or delivery frequency?

Yes, as many times as needed and free of charge.

Size depends on your baby's weight, not just their age: as soon as they grow, move up a size from your account (especially recommended for night-time, where one size up improves absorption). You can also space out or bring forward your deliveries if your stock is moving too fast or too slow. And if you change size, returning unopened packs is free.