Run the Janji Women's Runterra Bio Long Sleeve GFX T to death, then biodegrade it! This extremely soft and durable tee uses special technologies to maintain thermal, vapour, and odour regulation during your run to keep you as comfortable as your bed. Not only can you make a difference in your life with how far you can run in this tee, but you can also help the next generation as this tee will biodegrade in oxygen-deprived environments (i.e. landfill) in four years compared to the 400 years it takes for conventional polyester.