One of our biggest mats, The GrandMat® allows for the most people & the most fun. This FloatingMats® measures 6 feet wide and 21 feet long with 3 ply black foam and measures 1 & 7/8-inches thick. Holds 10-12 Adults or Up to 2,400 Pounds. Includes 4 proprietary grommets for anchoring.



Out of stock

Shipping Cost and Info

All orders will have an additional $150 for shipping. For all orders from Idaho, Oregon or Washington an additional $200 is required for shipping.

PRO-TIP: Use a Commercial Shipping Address to expedite your shipment for the same standard shipping cost.

Free pickup is available if you are near Tulsa, OK!

Product Details

The GrandMat® by FloatingMats® is the ultimate choice for fun on the water with your friends and family. Measuring 6 feet wide and 21 feet long, this premium quality foam mat offers ample space for up to 10-12 adults to lounge comfortably or play on the water.

With a sturdy 1 & 7/8-inch thickness and 3-ply black foam construction, the GrandMat® provides excellent buoyancy and stability, even in rough waters.

Whether you’re enjoying a day at the lake, ocean, or beach, the GrandMat® is the perfect accessory for all your water activities. It’s designed to hold up to 2,400 pounds, ensuring that you and your friends can enjoy the ultimate water experience without worrying about overloading the mat.

You might also be interested in our GrandMat® Deluxe, which is just a little bit thinner but still provides the ultimate in floatation strength and looks.

And if that is not big enough for you, we have even bigger mats for more people and more fun, including the OceanMat and OceanMat Deluxe. Find those on our Shop page.

The GrandMat® also comes with four proprietary grommets that allow for easy anchoring to a boat, dock, or shore. The grommets provide extra stability, allowing you to relax and enjoy your time on the water without any concerns.

So, if you’re looking for a high-quality floating foam mat that can accommodate a large group of people, look no further than the GrandMat® by FloatingMats®. Order yours today and experience the ultimate in water fun!

Additional information

Weight 42 lbs
Dimensions 252 × 72 in

100% Made in the USA with the Highest Quality American-sourced foam

No Metal – No Fabric in our floating mats.

All floating mats come with 4 proprietary grommets to connect with friends or to your dock or boat.

No payments for 6 months! Use the “PayPal Bill Me Later” feature at checkout.

Need something different?
Contact us about custom sizing.