Melanin an Muscle Black Fitness t-shirt. Melanin is Ubiquitous in every entity on Planet Earth that has hue/color. Melanin is the root of what gives color to skin, hair, eyes, plants, oil, animals, volcano's everything imaginable that is creative and colorful. Melanin is 100% activated through sun contact with Black/Indigenous Peoples and 50 to 100% with those Hispanic and all other people of color including "dark skinned" whites; Spaniards, Italians. Digitally Printed on soft superior 100% Cotton, Triblend, 50/50 premium Soft Style Quality T-shirts. Not Slim Fit Size XXL is Heavy Cotton. The Design Is Blended into the fabric of the shirt, No Peeling or Cracking High Quality Print. Quick Shipping By USPS First Class mail.