Net Replacement Film, or Mantle Film, is the new design technology product for baling silage, as an alternate to round bale netting. These newer stretch silage films specifically suit the newer generation combi balers and wrappers. This new breed of machines use a film on film application, in the two step process, of both baling with plastic and wrapping with plastic. This latest methodology has some very distinct advantages and improves baled product and silage quality in a number of ways.