Classic Style and Versatility for Everyday Casual Wear The Feedback Flannel is our versatile, best-selling casual wear button-up, featuring moisture-wicking and breathable materials and a UPF 50+ rating for any outdoor adventure. Constructed with a bluesign® approved 100% polyester fabric, the Feedback Flannel features two button flap chest pockets, a pen slot at the left chest pocket, and a shirttail hem for just the right amount of casual style. The perfect shoulder season layer for quick weekend getaways, clocking in at the office, or linking with friends for happy hour, the Feedback Flannel is year-round essential.