I'm sure someone asked this the other day. It's a fitted nappy so yes you do need a wrap although when we're at home Katie sometimes wears her fitteds without her wool on top. You'll just need to change your LO more regularly - as soon as the outer starts to feel damp.
How long would it last without a cover, hes not a heavy wetter at all Would it help if i put a booster in at all? Rah there so cute was looking forward to showing them off Think i bought to many though, so will be putting one on the C section