Review on Glass Pen Window Marker: Glass Markers Painting, Drawing & Art Supplies by Barbara Simmons

I am a school librarian and am constantly looking for ways to decorate the library. My library has big windows and I use them for decoration. I've tried many products for writing on windows but haven't found many products that write well, have bright colors, and wipe clean easily. I bought a bigger pen and made a test area. It was a vibrant color and it came off so easily! They're a bit more expensive for a large pen (like most educators, I buy them with my own money) so I'm hoping they'll last a decent amount of time. I wish they had fun colors like metallics and glitter, but that's a good start.