Trek Workshirt - GreenThe Trek Workshirt from Double RL is made with a soft, warm wool blend flannel that features a yarn dyed plaid pattern thats perfect for the cooler time of the year. Its tailored with a traditional fit that runs true to size and comes detailed with a pair of buttoned chest pockets, a straight collar, and authentic runoff chainstitched construction at the side seams, which is based on workshirts from the 1920s and 30s. Soft, warm wool cotton blend Yarn