It's getting cold, isn't it? Let's add some base layers for winter training. The two red Under Armour shirts are a given. They fit snugly and are perfect as a base layer under a long-sleeve shirt or T-shirt. The Medalist Club high-performance base layers are a well-known brand. Top athletes in keirin and winter sports wear them. They're warm. The total cost is quite high. But it's a great deal! Recommended for people around 165-175cm tall.