Coal The Frena Beanie. A Coal top seller, the Frena is a thick knit beanie, made with a heavy-weight yarn with a bit of stretch that makes for a perfectly snug fit. Made with soft, premium yarn, the Frena won't stretch out, and won't lose shape. The Frena can be worn cuffed or uncuffed in a more slouchy style, and comes in a wide variety of colors and patterns. 100% Acrylic. Hand wash. Imported.