NEW Smartwool Merino 150 Short Sleeve T Shirt Plant Based Dye in Earth Red Wash. Size Large. New with tags, excellent condition. 88% merino wool 12% nylon. From Smartwool: This men's Merino wool shirt is bringing the style. Its slim cut and back-to-front side seams offer a body-enhancing fit, while its eco-conscious plant-based dye creates an intriguing and one-of-a-kind look. But that's not all, this tee also brings ZQ-certified Merino wool softness, odor resistance, and temperature regulation. When you want to look good and feel good too, our Men's Merino Plant-Based Dye Short Sleeve Tee is a wardrobe must-have. Fit: Slim. Our slim fit is intended to follow the contours of the body. Our lightweight Merino jersey fabric uses a nylon core to increase durability while still keeping 100% Merino wool next to skin. Garments are colored using an environmentally conscious plant-based-dye process. Offset shoulder and side seams designed to increase comfort and minimize chafing. Side seams wrap to front for body-enhancing fit. Flatlock seam construction designed to minimize chafing.