YETI Tundra meets Interagency Grizzly Bear Committee (IGBC) standards for bear-resistant containers. They have been thoroughly tested in both controlled bear simulations and with wild grizzly bears. With locks in the integrated padlock ports, on two corners of a YETI Tundra cooler, grizzlies get nothing but frustrated. Fits all Tundra and Roadie models. Extra long shank Master lock.