Thompson's TRUE BLUE target shows you the true edge of the target even when light conditions are not optimal. This target's specially formulated blue is visually pleasing and easy to see under all light conditions.Fine or heavy reticles are clearly visible through a wide range of scope magnifications from 2X to 16X, and distances as far as 300 yards. Target has a white background with 6" blue circular bulls, and 1" grid for precise adjustments. Target performs outstandingly with open sights on pistols and rifles.