The Nike Pegasus 41 features two sperate Zoom Air units, one in the heel offering springy cushioning on impact, and another in the forefoot for a springy feel through the transition from landing to toe off. A wider forefoot and heel width not only improves stability but gives more room to pack in a wider Zoom Air unit for increased power. A lighter and more breathable upper than before uses the same midfoot band and padding as its predecessor for a locked in, but comfortable fit.