We purchased these mats and were sadly disappointed. We never got the point of actually using them because the vinyl was so smelly, we couldn't stand to have them in the house. I tried to "air" them out in the backyard for days but they still smelled. If you're looking for something to put under your highchair check out the Classy Kid Deluxe Floor & Activity Mat. The Classy kid mat works great and you can throw it in the washer to clean it up like new.