I bought a WN pocket on here, tried it on 16month old ds with the insert it came with but it leaked, seemingly straight through the nappy/pul?? unless it was from the sides and spread over the front material. Should it need extra boosting? he was in it an absolute maximum of 3 hours
If its microfibre that is likely your answer...it doesnt hold much wee so 3 hours is quite a lot to get from it really. As Rach says if the insert was dry that would be a fit problem but if it was wet (even just very wet at the front and nowhere else) then that will have caused your problem. The inner can make a difference too, they are more likely to wick when 'full' if it has a minkee inner rather than a fleece inner. Microfibre is best combined with bamboo or hemp.