Raglan Cut with 3/4 Hidden Zipper 3 Rear Pockets & Traditional Stitching Made with 100% Speed Pro advanced moisture transfer fabric Primal Wear Clothing is technically designed to maximize comfort & performance. From the exact placement of seams & fabric panels to the perfect combination of materials for the job at hand Primal Wear Clothing is precision crafted. We hand pick the materials that go into each product so you can be sure that your Primal Wear Clothing will be the most comfortable performance wear available anywhere. Primal Materials Speed-Pro A plaited double knit fabric with a micro yarn on the face &40;mesh side&41; & a higher denier filament yarn on the back &40;smooth side&41;. The combination of the different sizes of yarn creates a &34;push/pull&34; effect to force moisture away from the body & pull it to the face of the fabric. The microfiber mesh face then quickly disperses the moisture which in turn speeds the drying process.