Promotional Sports Shirts With Printed Logo. For custom sublimated polo shirts and sublimation polo shirts, Valkout Apparel uses fabric that is 100% polyester and has a weight of 140gsm or 160gsm. The fabric that keeps moisture out while allowing air to flow. Your logo can be printed on polo shirts that have a stand-up collar with a 1/4 zipper, a polo collar with a 1/4 zipper, three buttons up, two buttons up, and a full button down. We use the CMYK and pantone color systems for sublimation polo shirts as well as custom-designed polo shirts. In addition, we are able to send you a company fabric color swatch for your references, from which you can choose the ideal color for your own sublimation polo shirts. We always follow a strict procedure to ensure that the color meets your requirements.