Personalized Mito Research Train T-Shirt. Mito Research Green Ribbon Awareness Train T-Shirt - Vintage Black has room to personalize and makes a unique way to show support for someone with a mitochondrial disease. Wardrobe essential for looking good, 24/7. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar. Shoulder-to-shoulder taping. Double-needle stitched sleeves, bottom hem and front neck. Note: greys are a cotton/polyester blend.