Perfect for writing on glass and the colors are VERY vibrant... great product

The colors are awesome and this is a great product

Very good product and worth the price.

We expected black, green, red, and maybe blue, so we were pretty surprised to see 12 different colors!Thank you, Expo, for a great product, and range of products!

Great product exactly what I ordered.

Loved the product.

Expo is a very good and reliable product

Great product, good price

The caps were on tightly, so there shouldn't be a reason for their poor performance other than a faulty or perhaps very old product

I will let my friends and family know about this great product and will most likely buy it to gift to others who don't already own it.4 Stars -

Unless the company can offer a quality replacement product, I would not recommend these markers to anyone, and I would greatly appreciate hearing from the company to know why their product was so poor and whether they will make amends