mafi OAK floorings with a brushed surface have a anti slip rate of R11 according to DIN 51130.
In general, the slip resistance on wood is extremely high. This is due to the roughened, textured surface structure of the wood. mafi natural wooden floors use this natural feature and expand upon the non-slip surface.
Almost all mafi natural wooden floors are brushed. This causes the softer wood layers to be sanded or slightly deepened and leads to a a rougher, high-grip surface on the planks. A practical side effect of brushed surfaces is a subjectively higher sensitivity to heat by contact.