Coming in at less than half the weight of the competition with similar ice retention, the Rugged Road 65 is unlike anything else on the market. So, how have we managed to create an ultralight high-performance cooler that does not sacrifice quality or ice retention? The secret is in the Rigorite Coating. Rigorite is an innovative proprietary spray that was originally developed for many military applications, including bomb-proofing the walls of the Pentagon. It is strong enough to support the weight of an entire Jeep and tough enough to survive a drop off a mountainside.