Bison slim can cooler Bison Coolers new Slim Can Coolers are designed to keep 12 oz slim can beverages like Truly Hard Seltzer®, White Claw® and others frosty cold for hours even while lounging poolside in the hot sun.  These coolers feature our industry leading stainless steel double wall vacuum insulated technology.  The thickness of the steel used in their construction is resistant to dents and powder-coated exterior provides a steady grip that won’t chip or fade.