John Deere Boots Combine II series has all of the protection you need and comfort technology to fight fatigue. The Agion™ technology helps fight order and fungus that can cause athlete's foot, while the lightweight non-marking outsole resist oil, heat, abrasion, and slippage. To top it off the John Deere Combine II series leather is waterproof and barnyard acid resistant. *John Deere safety boots are laboratory tested to meet or exceed the I/75 and compression C/75 testing. They use the new testing standards ASTM F 2412-05 and ASTM F 2413-05.