Fitted closure 98% cotton / 2% Spandex 3 1/2 "mid-profile crown gives you the option to wear the beanie as low as you wish, offering protection against glare from the sun. 1 Best Flexfit Seller. Featuring high-performance cotton and spandex superior material, the Flexfit 5001 is unmatched in quality and comfort. The lightweight fabric is extremely breathable and absorbent to keep you cool. Choose from 3 sizes: Small-Medium, Large-XLarge, & 2XL, which all use flexfits patented spandex headband. Popular colors include, Black, Gray, and Navy Blue. A hard fuse buckrum stitched into the front of the crown provides excellent structure and helps maintain the original Flexfit shape.