"This was the highlight of my order, acc. to my daughter. We went and had it blown up, and it was beautiful! She was so excited! On the way home, though, the balloon suddenly popped. My daughter cried for 20 minutes. Maybe it was too hot in the car (wasn't too hot for us, though)? I didn't think mylar balloons popped that easily. Our balloon didn't look like mylar, though. It looked and felt more like plastic. To help my daughter feel better, we taped the broken balloon on the wall, so it kind of looked like a balloon, and she still had her dolphin."