fleece long underwear

Most listings show a polyester–spandex blend (about 90% polyester and 10% spandex) with a fleece lining for added warmth and softness.

They use a soft fleece lining—often described as ultra-soft or fleece-lined—designed to provide warmth and comfortable next-to-skin feel.

Listings commonly offer Midweight and Lightweight options, with product descriptions labeling the fabric accordingly to indicate different levels of insulation.

They include moisture-wicking fabric or fibers that pull sweat away from the skin to help keep you dry during activity.

Machine wash and tumble dry. Avoid fabric softener (it can reduce moisture-wicking performance) and be aware that static may occur after drying.

They’re typically described with a fitted or athletic cut, 4-way stretch for freedom of movement, and an elastic waistband that keeps them in place without squeezing.

Most bottoms are ankle-length pull-on styles; inseam measurements in listings generally range from about 27.25 to 31.5 inches.

They’re marketed as all-purpose base layers for cold-weather outdoor activities such as camping, skiing, snowboarding, and running.

Some items are sold as single pieces (package quantity: 1) while others are sold as two-piece sets that include a shirt and pants (Number of Pieces: 2).