Bests & Worsts Reviews from Amazon

As a mother to three children with autism who have fine motor deficits, I was excited to try out these laces. My sons know how to tie their shoes, but they lack the dexterity to be able to tighten the bow so that the laces remained tied. We put these laces on yesterday. We watched the video and followed the directions. My son just brought me the end piece that came off his shoe the second time he put them on his feet. I wish that I could just purchase this replacement piece or that more than two (one for each show) were included with the laces. I don't want to have to buy the laces again just for this end piece. For us, it's a fail. If anyone knows how to open this piece to try to put it back on the lace, please share.