Caterpillar Parker - Dark Beige - Men's Electro Static Discharge Steel Toe Work Boot. Caterpillar Parker - Dark Beige - Men's Electro Static Discharge Steel Toe Work Boot. Working hard shouldn't mean being uncomfortable. Introducing Caterpillar's new Ease - Engineered Comfort, a proprietary foam midsole that is 30% lighter, more shock absorbing and more flexible than standard EVA. The Parker Chukka style work boot is full grain leather, slip resistant and ESD. Transition from work to play without having to change yCaterpillar's work boots. Step into the Parker ESD work boot with Ease and experience the Power of Comfort. Available in soft and steel toe. Men's