The Bristol Tweed Long Sleeve gives the soft, trusty feel of cotton flannel in a tweedy weave. It provides a nice layer over a T-shirt or henley and works great under our crew sweaters and 1/4 zips. 100% cotton. Cotton flannel in a traditional tweed-look construction. Men's lightweight flannel shirt with tweed look, UPF 50+, garment washed, dual drop-in button closure chest pockets, shirt tail hem, tonal stitching details. Material: Cotton.