ColdPruf Men's Premium Performance Thermal Base Layer Long Sleeve Shirt - Single-layer engineering giving you a close, comfortable fit without restriction. Silk Weight 85% Polyester/15% Spandex Moisture Management Maximum Dryness Microban Anti-Microbial Protection Single Layer Flat Seamed Construction Extra Length in Body and Sleeves for Athletic Fit Tagless Labeling Non-Binding Hemmed Cuffs for Comfort Style: 89A