My wife bought one an UP! newborn high chairs and I have to say the machining was out ( see attached) so we just wasted money on the purchase, plus an evening on the fool's errand of trying to build it. On one side the holes line up, but on the other side they are out by about 1mm, given the wood slots into a groove there is no wiggle room and given there is a weird metal plate we insert ( part of the overly complex design) I can't fix it by drilling the hole properly. We are not the type to make claims, but Anstel should not be selling this, it's expensive, complicated and the machining of the holes does not match. Just a terrible product and the last thing new parents need is stress and expense. The other reviews are good, so maybe we were unlucky, but I'm just going to chuck it out