Microfiber polyester yarns make the fabric of these fleece thermal pants so soft to the touch! Billowy warmth without weight, Micro Fleece base layers are durable and breathable. When it's cold, these women's heavyweight thermal pants is an excellent choice for layering without bulk.Micro Fleece features: Billowy warmth without weight Acclimate Dry yarns for moisture management Microfiber polyester is exceptionally durable Flat seam construction for seam strength and longevity Heavyweight warmth, active fit Imported 92% Polyester / 8% Spandex; 220 gsm PM1404 FOUR WAY STRETCH ODOR BLOCKING ACCLIMATE+ DRY Polarmax Women's Stretch Fit Natural-Rise Micro Fleece Tights