UPF rating 25+Ultra-soft brushed surface traps air and allows for increased airflow/breathability4-way stretch for ease of movementMidweight warmth (2.0) makes Cloud Nine extremely versatileHidden zipper pocket, wide soft waistband and all flat seam construction86% Polyester, 14% SpandexVendor Style Number: W8218 Terramar Women's Cloud Nine Thermal Bottoms