This is from MAC's Peacocky Collection, and it's one of their Mega Metal eyeshadows. The formula is fabulous, everything that eyeshadow addicts look for: Pigmented, soft and buttery, easy to blend. It's a much larger size than the usual eyeshadow pan, just over double the size of MAC's regular eyeshadows. It is not currently on sale, but MAC often re-promotes limited edition shades, so keep an eye out for that.