Well that dreaded time has come....ds has finally reached the height limit to rf in his xtsl and is a pound away from the weight limit on all the other erf seats We are getting him a prosport but I want to know what the materials are like on the different colors before giving him options to choose from. I have only seen the all gray original model in person and its suede-like, which I would prefer to avoid because it seems hot! It's hard to tell from the online pics what the materials are and of course it doesn't say. Does anyone know which colors are what and could you compare them to material on a different seat (I've seen most seats IRL). Also, where is the best place to get them currently for the price, etc? Leaning toward performance series but open based on fabrics!