Jaco Tenacity Performance Men's V-Neck T-Shirt - Black This garment is made with 60% Rayon From Bamboo and 40% Cotton Bamboo Plants grow quickly, do not require fertilizers or pesticides, release more oxygen into the atmosphere than trees and are self replenishing, making them 100% sustainable and earth friendly This shirt is embellished with 100% water-based inks which are environmentally friendly and are designed to soak into the shirt to become part of the cloth itself; making them breathable, durable, and comfortable This t-shirt style is cut to a Slim-Fit. The fit is tighter than a regular t-shirt as the body and arms are cut narrower. Consider sizing up if you prefer a looser fit Care: Machine wash cold, tumble dry low, do not bleach