Under Armour Form Full Zip Womens Fit: Semi-Fitted--Slim, contoured fit for ease of movement and a stylish look. Fabric Type: Stretch--Usually a blend of knit or woven fabric with spandex or elastane. Creates a soft, durable fabric which allows freedom of movement yet retains its shape through repeated wash cycles. Performance Technology: Under Armour AllSeasonGear--Between the extremes. AllSeasonGear is made from radical fabrics that flex with changing weather conditions. It's engineered with UA's Moisture Transport System to deliver core temperature regulation and maximum breathability. Ventilation--Mesh or breathable fabric inserts in high heat zones allow sweat to evaporate and cool air to circulate. Fabric Content: 88% polyester, 12% elastane