Tanga offers the 17" x 24" Memory Foam Comfort Bath Mat 2-Pack in several colors (Blue pictured) for $12.99 with free shipping. At $6.50 each, that's $11 less than the best we could find for two similar bath mats sold elsewhere. (For further comparison we saw a single bath mat for $6.49 shipped yesterday, since expired.) The surface is made of 100% polyester, and the fill is composed of 100% polyurethane memory foam.