Outsole: Vibram Thunderstruck TC4 Plus combines TC4 plus rubber with a co-molded urethane midsole. It is designed to flex and grip on multiple surfaces. This construction provides lightweight, instant gratification right out of the box.
Industrial, die-hard boots built for heavy-duty work with flexible, lightweight comfort. Our 11" Waterproof Thunderstruck work boots are equipped with an Ortholite Triple Density insert and a Dri-Lex lining to keep your feet comfortable on the job site. The oil- and slip-resisting Vibram Thunderstruck TC4 Plus rubber outsole has a rugged, multi-directional tread pattern designed to flex and grip on multiple surfaces. This boot meets ASTM F2892 safety footwear standards.
