The TUO Kinetic Merino 250 Bottom is a warm and durable base layer built to perform in cold-weather conditions. Crafted from 250g interlock fabric made with 95% 18.5-micron merino wool and 5% spandex, it offers superior natural odor resistance, moisture-wicking, and thermal regulation. The merino wool is spun around a nylon core to enhance elasticity and long-term durability. With flatlock seams for smooth next-to-skin comfort, a covered elastic waistband, and a functional fly, this base layer bottom is ideal for layering beneath outerwear on chilly pursuits.