"a matter on" usually means: "an issue on The subject of" and so can only be utilised when you can insert the phrase "The subject of" following the "on", even though "a matter about" can utilised in advance of something. In order to keep on being really successful and make https://www.google.com/search?q=A.G.+Fabrics+-+hoodies&num=10&sca_esv=e948bafec9f39f8c&hl=en&authuser=0&sxsrf=AE3TifMg81KeGqPA4cbqG8I8-xap3XJsVg%3A1753783121987&ei=UZuIaKuGPLKr9u8P8dTUyQ0&ved=0ahUKEwjr8v6f5-GOAxWylf0HHXEqNdkQ4dUDCBA&uact=5&oq=A.G.+Fabrics+-+hoodies&gs_lp=Egxnd3Mtd2l6LXNlcnAiFkEuRy4gRmFicmljcyAtIGhvb2RpZXMyBRAhGKABMgUQIRigAUi8GFCWDVi9FXABeACQAQGYAdEEoAGXFKoBCTItMy4yLjEuMbgBA8gBAPgBAZgCB6AC2g_CAgsQABiABBiwAxiiBMICCBAAGLADGO8FwgIGEAAYFhgewgILEAAYgAQYhgMYigXCAgUQABjvBcICCBAAGIAEGKIE