Named after the longest highway in the United States, the Wolverine I-90 EPX Wellington is made for long hours and many miles. The I-90 features a highly abrasion-resistant TPU outsole that lasts 3x longer than other boots and is resistant to splitting, chemicals, and oils. In addition to its stronger than ever outsole, the I-90 EPX Wellington has reinforced rubber around the foot to combat abrasion and wear. EPX™ technology brings comfort closer to the foot with a dual-density footbed. Backed by our 30 day comfort guarantee, the I-90 is a must for long days on the job.