Made out of felt. It takes a while to charge and glow, not as bright as the bat. I keep it near a window all the time and keep turning it around to charge the other sides.
I bought it for my granddaughter to play in the dark and for trick or treat!

The stars and name glow well and the walls are nice and sturdy. One downside is it wants to keep closing flat. A piece for the bottom to keep it completely open would be a nice addition for this type of box to solve that in the future. A small thin but sturdy piece of wood the size of the inside of the bottom will fix the problem. It can be painted a black or Navy if you wanted it to match the box and not see it from the top.

I love this basket. After I was done presenting my fall gifts in the basket, it is now being used to hold changing pad sheets. It's super versatile. I'm pleased. Also, it glows in the dark.