Marmot Women's Macy Long Sleeve Tee Dri-release Cotton 85% Polyester, 15% Cotton 4.9 oz/yd Soft, Comfortable, Light Weight Performance Knit Heather Textured Fabric Ultraviolet Protection Factor (UPF) 30 Dri-Release for Permanent Moisture Wicking and Quick - Drying Properties Fresh Guard Finish for Odor Control Flat-Locked Seams for Added Comfort