Today only, 13 Deals offers the Magic Mat Beach Mat for $14.49 with free shipping. That's the lowest price we could find by $5, although we saw it for $5 less in September. It measures 6.5 feet x 5 feet and features a "multi-weave technology" that allows sand to fall through it, ensuring that you don't sit on a sandy mat. You can also buy three or more for $11.99 each.