Fit: Loose--Generous cut for ultimate comfort and ease of layering. * Fabric Type: Mesh--A knit or woven fabric with small, evenly spaced holes * Performance Technology: Under Armour® HeatGear® --For when it"s hot. HeatGear® technology wicks perspiration off your skin, rather than absorbing it. 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: 100% PolyArmour™ polyester