The Anchor™ is a universal non-tipping cup holder designed to keep your favorite cup or drinkware container from falling over! It acts as an anchor to any smooth surface. This portable cup holder will keep your drink from getting knocked over in almost any situation!

"To use simply set the Anchor down and insert your favorite cup. The Smartgrip® suction base keeps your beverage upright while being hit or rocked. To remove simply lift straight up. From a lack of cup holders on a rocking boat to wagging dog tails, this product will keep your drink upright, and accident-free."

-product information directly from Toadfish