100% organic cotton. Round neckline. Seasonal screenprint at the chest. Hammers logo at the back. Unisex. The Birk T-Shirt is a unisex style showcasing a seasonal GmbH logo at the chest and a complementary hammers logo at the back. The organic cotton top is one of the more traditional items from the brand’s new seasonal collection, and it will make for the perfect addition to your graphic t-shirt arsenal.