To make sure this top can handle the heat, we tested it on a canoeing trip through Big Bend National Park in West Texas. The slim fit lets you layer with ease. And when the sun comes out? Don't sweat it, the UV protection helps keep you covered. Benefits:Nike Dri-FIT ADV levels up our sweat-wicking technology with advanced cooling and zones of breathability to help you stay dry and comfortable. Flat-seaming helps make this top comfortable and easy to layer. [] Product Details:91% polyester/5% wool/4% spandex. This product provides UVA and UVB protection from the sun in the areas covered by the garment. To protect exposed areas, the use of good quality sunscreen is recommended. Machine wash. Imported. Style: HV1102; Color: Black/Anthracite/Summit White; Size: XL; Gender: Female; Age Group: Adult | Nike ACG Chinati Women's Dri-FIT ADV Long-Sleeve Base Layer in Black, Size: XL | HV1102-010