Ok so very happy with the mat omg perfect.He has pee the bed few times now .He is 9 an omg .Mat is the best .Didnt even get to the sheet under it . As for the kids pad undies yes they did get wet but saying that .He loves them because they feel like jocks an not like nappys that I payed packs over an over for an still peed thr them aswell .He use to pee the pull-ups all the time but these pad undies like jocks .He has only wet the bed few times an felt like getting up in the night for toilet due to feeling like real boys jocks .So happy with my purchases I payed for all the pack over 200 $ for 2 mats ,kids mattress sheet an 3 jocks .Its worth it as u have a week supply an spare on the go for the accidents .Thank you so so much I wish I found u guys earlier .