Enjoy the cooling technology built into the Under Armour Women's ArmourVent Moxey Long Sleeve Shirt, while the Hydro Armour treatment protects you from the elements. It's a great pick when you need light coverage on the water. 4.6 oz. 100% polyester fabric. Iso Chill Cooling Technology features yarns with increased surface area that help dissipate heat from the body, creating a cooling effect. Hydro Armour water fighting technology is quick drying, and chlorine and salt resistant. UPF 30 sun protection. HeatGear ArmourVent provides strategic ventilation. Fitted cut is contoured to the body, without the constriction of compression. Import.