Matching undervisor. No closure Ultrafibre – blended using synthetic fibers for versatility. The fibers are resilient to wind/water, and have a natural shine to emanate strength. Airmesh – Ultra breathable with airmesh sides and back and a moisture absorbant sweatband engineered to keep you cool. Stretch to Fit – The original stretchable hat featuring Flexfit stretchable sweatband technology. The all-purpose hat is the perfect blend of comford and style, whether it be for sports or casual wear. Durability – Reinforced stitching throughout and a fused hard buckram help maintain the original Flexfit shape for those instances where life throws a curveball Includes Sweat Liner – Each Hat Pros Flexfit cap includes a peel-and-stick sweat absorbing liner that helps wick away sweat, improve wearable performance, and keep your hat cleaner, longer.