This kit is made from chipboard to increase the rigidity and longevity of the targets. There is a brown side and a white side to each target. This is a must have for serious shooters looking for "realistic" training targets. 1/3 Scale: 1 Foot = 1 Yard Example: Standing 10 feet from the target simulates a full size target at 10 yards. 1/6 Scale: 1 Foot = 2 Yards Example: Standing 10 feet from the target simulates a full-size target at 20 yards.