The simple long sleeve Jena Tee checks all of the boxes for comfort as an indulgently soft base layer and works just as well on its own. Traditional boat neck, full-length sleeves. Hem sits at hip. Naturally up to UPF 50 (Ultraviolet Protection Factor) learn more FABRIC: ORGANICALLY GROWN BAMBOO VISCOSE JERSEY Like a second skin, our bamboo viscose jersey provides incredible softness, breathability, and sun protection. 95% Viscose from USDA Certified Organic Bamboo | 5% Spandex Sewn Where Sourced on Small Sewing Floors Low Impact Dyes - Our dyes are all AZO free Oeko-Tex 100 Certified - Certifies that no residual chemicals are present in our garments and bedding when they reach the consumer.