UC Irvine Eaters Cap. Show off your team spirit by wearing this NCAA 1-fit stretch cap from Top of the World. The high-quality cap is made with a durable blend of wool and spandex, and has 6 eyelets that allow your head to breathe. This cap features an adjustable 1-Fit stretch design, which creates a fitted look with a spandex rear sweatband that stretches to fit your head. The team-colored cap displays the embroidered team graphics on the crown and back.