Simple longsleeve design makes for a highly versatile base layer that will keep you dry and comfy in any weather. Wear it alone as a high-performance summer shirt, or layer it under fleece for unbeaten moisture-wicking performance in colder weather. Great for high-exertion activities, water immersion sports, bad weather, winter layering.

Silk Weight Polartec Power Dry® fabric. This high tech fabric wicks moisture better and dries faster than any material we've seen. It is a very light material with a smooth, silky feel. Two distinct fibers are used to create two unique surfaces (a "bi-component" knit). The inner face uses normal polyester fibers to pick up sweat from the skin, while the outside face is knit from smaller microfiber polyester, which spread sweat out over a wide surface for rapid evaporation. This patented construction works like a dream - the fabric readily absorbs sweat from your skin, but still feels dry because moisture is immediately passed through to the outer surface, where it is free to evaporate or pass into your next layer. Provides a Sun Protection Factor (SPF) of 20+. Wash cold and hang dry to avoid shrinkage. 100% Polyester.

Basic snug sporty fit is not too tight but not too baggy. Fits easily under other layers and goes fast. Raglan-style sleeves run long and are carefully designed to provide excellent freedom of movement. Men's S - XXL and Women's XS - XL sizes.

Click here for sizing chart.