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.
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Comments about YETI Bear Proof Lock (Set of 2):
Use two locks to secure lid at corners. They work, but lid is not airtight, so bears can still smell contents. For wilderness use, combo locks with same setting makes more sense; a clamp combo lock would solve both issues.