Yeti Tundra Haul 45-Can 2-Wheeled Cooler, NavyPermaFrost insulation is pressure injected commercial grade polyurethane foam in the walls and lid StrongArm handle is engineered with an all metal T bar design and comfort grips that allows you to pull the cooler next to you to avoid running into you heels Wide design means that the weight is evenly distributed on each wheel Includes NeverFlat wheels that are a solid, single piece tire construction that is impact and puncture resistant Smooth tread