O'Neill Men's 24/7 Tech Long Sleeve Crew Top 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 Flatlock Stitched Strategic Paneling for Your Best Performance