Massachusetts Institute of Technology Sideline Trucker Hat features official athletic logo on front. Headwear is 100% cotton twill front panel and brim, has a pre-curved visor with contrast stitching, eyelets, and brim, Polyester mesh back with plastic snap closure. Each hat was double-washed before and after construction for clean, durable & cozy, breathable, and lightweight wear. Manufactured and Officially Licensed by Ouray for Ivysport.