"I tried the OSFM AIO as an easy fit option for grandparents/carers. The nappy itself fit well and still had ample room to grow. For our heavy wetter, it definately needed to be boosted though, but was great for us once boosted. The fit was better suited for my chunkier thigh girl I believe too though (because of the side snap fixtures). All round a good nappy though and was quick drying for an AIO too."