From the website: 46% Polyester / 46% Recycled Polyester / 8% Elastane V-Neck Contrast Collar and Sleeve Knee Length Upf 50 Sun Protection Fabric Shorts Underneath Stretch Truesculpt Technology Smooths Your Shape Model Is 5'8" And Wears Size Small Machine Wash Opti-Dri™ Transfers moisture away from your body to keep you cool and dry. Swing Tech™ Made to maximize your range of motion on every swing, Swing Tech provides noticeably less restriction through re-engineered construction and materials. UV Block Keep your skin safe from the sun's harmful rays with our UPF50 rated