The hats themselves are made pretty well made and sturdy. Unfortunately, the battery packs to light them up are not. The medium and small hats will not light up even after trying everything to make them work. One of the battery packs had the metal spring part that attaches to the batteries fell out when I initially opened the battery pack. Since I didn’t check them earlier to see if they’d work, I will just have to use them unlit since the gatherings I am using them for are the next 2 weekends. It’s a bummer but at least the large hat will be lit.