We haven’t developed anything new here. You might even say it’s the same ol’ (SAMO) brush everyone else claims is best. What we will say is that we developed our own molds and sourced all the best materials to make our brushes battle worthy and affordable for professional painters. We are so confident in the quality and durability that we offer a full 1 year replacement warranty. Includes the brush only, cover not availible yet. Covers will be availible soon.