This is one of Garcya's many SUPER designs, which he is allowing me to use to create this product line...HIS SITE IS TOTALLY AWESOME!!! Please go check it out: http://garcya.us/blog/
This round rubber coaster is made of a durable heat-resistant polyester fabric top, backed with a neoprene rubber non-slip backing, which keeps things from sliding. It measures 3.5" in diameter and 1/8" thick. It will not discolor or fade, machine washable.