The 180 Kickflip combines a 180 Ollie (an ollie with a 180 degree rotation of both the body and the board) with a kickflip (invented by Rodney Mullen). It can be completed one of two ways: either frontside, meaning the rotation is done towards the front heel, or backside, which is the same as frontside, but the spin is towards the back heel, rather than the front.