evo.com | Oyuki Long Underwear Tops > Designed specifically for those who prefer natural fibers, the Oyuki Merino Long-Sleeve base layer is super warm and made from 100% fine Australian Woolmark(R) merino wool so it is soft on your skin. Relaxed Fit Flatlock Seams 84% Merino Wool / 12% Nylon / 4% Spandex 200gsm Australian Woolmark(R) Merino Wool This product may contain chemicals known to the State of California to cause cancer, or birth defects, or other reproductive harm. | Oyuki Longsleeve Men's 2025 - Large Black | Nylon/Spandex/Wool