Marmot Women's Kaley Long Sleeve Tee Dri-release Tencel 83% Polyester, 11% Tencel/lyocell,6% Elastane 5.0 oz/yd Imported Fresh Guard Finish for Odor Control Soft, Comfortable, Lightweight Performance Knit Fabric Ultraviolet Protection Factor (UPF) 30 Dri-Release for Permanent Moisture Wicking and Quick - Drying Properties Flat-Locked Seams for Added Comfort