Our line of Vital tees and tanks uses a next-generation natural fabric made of renewable cellulose from sustainably managed beech forests. It’s softer and more durable than cotton, more environmentally friendly than synthetics, quicker drying, stretchier, stronger, silkier, and lighter weight. We even gave it sweat-wicking and anti-microbial properties as well. Long story short, everything you want in a gym shirt, Vital tanks and tees are just…more of that.