8% Spandex Premium FabricMade of 92% polyester and 8% spandex, our thermal underwear suits are with super soft fleece lining that is not only very soft and comfort, but also can keep you warm in the extremely cold air and stop you from shivering. Ultra ElasticityThe mens thermal underwear is flexible that can fit well to perfectly show your figure line, so that you can wear more clothes in the winter without looking bloated to guarantee freedom of movement. Also can without losing shape after long time wear. Ideal Sporty GearDifferent from the normal underwear, our heated underwear set is not only as a base, but also can be used as a sports suit because of its breathability and moisture wicking fabric. It is an idea gear for running, climbing and camping training, cycling, hiking, jogging, indoor gym exercise, fitness body training in cold weather. Base LayersOne set includs 1 x thermal top for men + 1 x thermal for men, which is very suitable for base wear, thus you can wear less but warm, and keep good look and cozy in freezing cold climates or bad weather. Heart-Warming GiftOur thermal wear for men, a lightweight baselayer, has fine cut and perfect hem design that is not easy to thread off. You can give it as a heart-warming gift to your boyfriend, brother, friend, father and husband, so that your loved one can feel the warmth of your love.