The Spin Jersey Tee is a performance tee with open sleeves and excellent sun protection. Made with spin dye technology, an eco-friendly production process where the color pigment is fused with the yarn to save 95% of the water and 90% of energy it takes to dye yarns using traditional methods results in long lasting color that never fades. 100% polyester interlock. Moisture-wicking. Eco-friendly Spin Dye Production. UPF 50+ sun protection.