Review on Sonku Coaster Set for Absorbent and Glass-Friendly Surfaces by Jeff Callier

I bought this set of 6 sets 3 times to share with my sister. Cork absorbs water while being light and simple. They won't scratch the table and offer some resistance rather than sitting on something smooth like a glass bottom. The small ones are perfect as coasters for drinks and we use the big ones for our plants! I would highly recommend them for any use.