Primary Colors pack includes 8 rolls of foam prewrap made by Mueller. Each roll is 2 3/4" wide and 30 yards long. Each pack contains one roll each Pre- wrap is a pretaping foam used by athletic trainers to protect skin from sticky tape. It is widely used by female athletes to make a headband that is clingy but doesn't slip. The foam tears easily by hand and when tied in a knot, makes the perfect sized headband.