I tried a much cheaper brand of bags in my FoodSaver sealer.  What a mistake this was.  The bags did not seal as well as my FoodSaver bags I had been using.  Consequently I had meat that had gotten freezer burn.  So I ordered 2 pkgs of FoodSaver bags and was fortunate that they were buy one get one.  A real bargain!!  Also now assured that my meat and other items will be protected from freezer burn.  Thank you FoodSaver!!