As a lightweight trainer with just enough support to keep that alignment, you’ve never had a snappier ride than the 870. Ground contact REVlite is among the fastest foams on the market and allows the shoe to cut down on added weight with unnecessary blown rubber underfoot. Made for newer runners and experienced racers alike, the 870 beautifully and seamlessly blends the best of both worlds in weight, responsiveness and support – the true jack of all trades.