To use this men's long - sleeve tee, simply put it on as a mid - layer or wear it on its own for a casual look. For the best fit, refer to the size information where a 6'1" model wears a medium. When it comes to maintenance, always use cold water for machine washing to keep the fabric's softness and stretch. Avoid using hot water as it may shrink the tee. After washing, dry it flat to prevent any unwanted wrinkles or shape changes. This will help your tee stay in great condition for a long time.