The Atlas mid-range features a two-part molding process that allows them to meld together the flight plate and rim. This disc combines a soft Pro rim surrounded by a firmer Pro plate. The Atlas features four "compass points" located on the underside of the disc. These ports are where the rim is injected over the flight plate. Please note:The Atlas with its two-part design offers a vast array of color combinations between the rim and flight plate. As a result the colors options listed will only be for color of the flight plate. For example if you purchase a blue Atlas, you will receive a blue colored flight plate and there is no garauntee on the color of the rim. If you do need to request a certain rim color we ask that you please leave a customer note and we will do our best to to meet your requests. Features: Speed 3 Glide 3 High Speed Turn 0 Low Speed Turn 0 Pro Plastic Core and Overmold