Park skis are often designed with a more symmetrical shape to make switch (backwards) skiing much easier and reinforced edges to withstand rails. Eric Pollard designed the first two symmetrical skis, the Anthem and the Invader. Pollard now has his own pro model skis from Line skis called the EP Pro (Mr. Pollard's Opus - 2012), the Elizabeth and the Sir Francis Bacon. Some new powder and all-mountain skis are created with 'reverse camber' (aka 'rocker') meaning that the tips and tails are bent up slightly to make powder landings easier.