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. Springy CushioningBioMoGo DNA midsole cushioning and rebounding rubber create a springy feel underfoot. Quick TransitionsThe Midfoot Transition Zone is shaped to go from heel to toe quickly. Lightweight FitThe one-piece mesh upper and internal bootie are so light and breezy, they feel like they\'re not even there.