I thought it was about time alternatives to man made polyamide fabrics became an option and our bamboo viscose material really does fit the bill. A great t-shirt equally at home in the gym or out in the hills. These shirts can be worn as either a base layer in warmer conditions or on its own in warmer conditions. Its extremely comfortable, akin to silk on the skin, naturally hypoallergenic, naturally antibacterial. A great alternative to man made fabrics and much more friendly to the environment.