9M Clothing Company’s Extreme Winter Thermal Leggings will keep you warm during the cold season. They are made from ultra-soft polyester, providing you with a soft feel without the itchiness or scratchiness. The plush lining will provide you with the added warmth you need to get through the cold weather. The four-way stretch spandex material will provide you with un-restricted movement (Great for outdoor activities). These leggings will make a great outer or under layer. Please order one size up, the ML fits like SM & the XL/XXL fits like L/XL.