Nike Breathe Fabric Helps You Stay Dry And Cool. Nike Dri-Fit Technology Helps You Stay Dry, Comfortable And Focused. Mock Neck With A 1/4-Zip Design Gives You Custom Cooling. Standard Fit For A Relaxed, Easy Feel Notch At Side Seams For Mobility Machine Wash. Fabric: 100% Polyester In Xx-Large This Shirt/Jacket/Top Measures 32 Inches Long, 26 Inches Across At The Chest, And Has A 37 Inch Sleeve. (All Measurements Are Handmade And Approximate.)