What do you get when you combine the speed of a racing flat with the cushion and durability of a trainer? The springy, light Launch 6. Happy miles to you. The Updated midsole with additional foam under the forefoot offers a longer-lasting energizing run experience. *Springy Cushioning in the BioMoGo DNA midsole with cushioning and rebounding rubber create a springy feel underfoot. *Make Quick Transitions with the Midfoot Transition Zone it's shaped to go from heel to toe quickly. *The one-piece mesh upper and internal bootie are so light and breezy, they feel like they're not even there.