Boston Red Sox Nike Authentic Collection 1/4 Zip - Navy.  Lightweight top suitable for mild temperatures, This product provides UVA and UVB protection from the sun only in the areas covered by the garment. To protect exposed areas, the use of good quality sunscreen is recommended.  Removable sleeves with finished seams can be cut above the elbow, Cut sleeves cannot be reattached, Mock neck, Side splits at bottom hem, Screen print graphics, Material: 78% Recycled Polyester/22% Cotton, Long sleeve, Machine wash, tumble dry low, 1/4-Zip, Dri-FIT® technology wicks away moisture.