Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Didn't work for my situation

I have twin toddlers who are nearly 2. We went on a 12 hour trip to a family member's house for Thanksgiving last week. I thought these would be great for play and eating while strapped in their car seats. They are folded up in the bag when you get them. I unfolded them and set them up, but the fold causes them to slant in the middle. Everything rolls to the middle and they don't seem to fit on our car seats very well. One of my daughters liked the tray and the other one hated it because it didn't fit well (very bulky - seems like it would work better for older children). We really couldn't use them for the intended purpose, so I folded them back up and used them as a wedge under the car seat to recline it for sleeping. It could be our car seats or maybe I didn't strap them tight enough to help keep the tray straight, but from the photos it looks like the tray would be flat. Either way, this was not a good purchase for us.