Named after the longest highway in the United States, the Wolverine I-90 is made for long hours and many miles. The W10788 features a highly abrasion resistant TPU outsole which wears twice as long as other boots and tough on oil and chemicals and resistant to splitting. Additionally, the I-90 has Wolverine’s patented Carbonmax safety toe, that is lighter and thinner than standard steel toes which reduces foot fatigue and provides a more comfortable fit. Lastly, the I-90 has Wolverine’s patented EPX dual density PU EPX Anti-Fatigue footbed to keep you going day after day. The W10788 features a waterproof full-grain leather upper, breathable waterproof membrane with moisture wicking mesh lining, advanced comfort PU midsole, nylon shank, Carbonmax safety toe, and an oil and slip resistant TUP outsole, with Wolverine’s 30-Day Comfort Guarantee. Electrical Hazard Rated.