Genesis Tech Tee Men from Black Diamond is sewn in 100% recycled polyester with graphene technology. The material used is quick-drying, helps regulate body temperature and has an excellent ability to conduct heat. The flat seams contribute to a good comfort. The t-shirt is created for use with a climbing harness and has a slightly extended bottom edge on the back. In addition, the shoulder area is designed so that the T-shirt does not create pressure points if you carry a backpack.