Micro Fleece Lined Construction: Made with 90% Polyester and 10% Spandex for optimal warmth and flexibility. Ultra Soft & Warm Fabric: Thermal tech fleece fabric of the baselayer caresses the skin naturally providing maximum comfort and softness Stretchy & Durable Design: Spandex added for extra stretch and shape retention; close-fitting style does better in retaining body heat to keep you warm Versatile Performance: Thermal Pants with ultra soft hand feel and heat-retention for various indoor activities, outdoor excursion and recreational activities Easy Care Instructions: Machine Washable for convenient maintenance and long-lasting use Two Pack Value: Includes 2 pairs of thermal long johns underwear leggings pants for extended wear and convenience DEVOPS believe warmth is more than a feeling it's a way to show care. As a brand dedicated to comfort, quality, and style, we craft thermal wear that keeps you cozy through every moment of your day. Driven by a passion for promoting a healthy and free lifestyle, DEVOPS is committed to helping you feel confident, cozy, and at your best every moment, every day of the year.