Innovative SmartGrip technology allows the Can Cooler to stick to any smooth surface. From a lack of cup holders on a rocking boat to wagging dog tails, this product will keep your drink upright, accident-free, and icy cold. To use simply place The Can Cooler on any smooth surface and it will keep your drink in place (securely up-right). Patented SmartGrip technology makes it hard to tip but easy to lift. Double wall vacuum insulation keeps beverages cold. Made with high-grade stainless steel, making them puncture & rust-resistant. Removable rubber gasket to securely lock in your can.