sentences:  Maintaining a flat profile at the back allows the skater to transfer power through the rear of the skate efficiently to maintain a good speed.Some hockey skates like Bauer, Mission, Alkali and CCM brands, fitness skates like K2's VO2 100 X Pro and inline speed skates include a Hi-Lo setup.Hi-Lo setups resemble a flat setup in that all 4 wheels touch the ground at the same time.