Wound string construction involves winding a cover/wrap wire around a nylon or steel wire core. The total mass equals the string gauge. Two strings of the same gauge can differ, by manufacturer, when a large core is combined with a thin cover/wrap or a thin core is wrapped with a large cover. Multiple cover wraps are sometimes used or an oversized wrap wire is further processed by compression, grinding, polishing or other method to reduce it to gauge. Roundwound strings, having more exposed vibrating surface, are louder than polished, ground or flat wound strings which minimize fret and fingerboard wear and are preferred for warmer tone, playing ease, and reduced finger noise. Silk or nylon can be inlayed between core and cover for a cushioned feel.