The Filson SS Pioneer Solid One Pocket T-Shirt is bound to become a go-to wardrobe staple! It is a prime example of simplicity and excellence perfectly executed; crafted from 3.5oz 100% cotton jersey the t-shirt is both cool and comfortable. Designed with comfort in mind the fabric has plenty of stretch and is breathable in warmer weather. The rib knit collar allows the t-shirt to retain its shape for increased durability. This t-shirt is a warm-weather essential for year round comfort.