O'Neill Wetsuits Men's 24-7 Tech Sleeveless Crew Shirt 93%Nylon/7% Elastane Imported Strategic Paneling for Your Best Performance The New 24/7 Tech Series utilizes a Highly Breathable, Quick Dry, Nylon/Spandex Composite Fabric 30+ UV Protection; Recommended and Approved by the International Skin Cancer Foundation Relaxed Fit for Maximum Comfort and Cooling Flatloc Stitched