I have been very pleased with the performance of the Popolino Wrap. I have had no leakage at all so far with an inner pad or an inner shaped nappy with poppers and have also been able to use the wrap with my all in ones which are losing their leg elastic and so leak quite quickly. My daughter is 3 months old and weighed just under the weight suggested for the medium wrap but because of the large velcro band it has been easy to adjust them to be comfortable. She has been able to go through the night without needing a change when she wakes for feeding. As the wraps wash at 60% they can be washed with the inner nappies and not separately as I have had to do in the past.