Rubber soleTHIS SHOE IS FOR: The Launch 7 is perfect for runners who want a streamlined, race-ready shoe that still has enough cushioning for everyday training.FAST CUSHIONING: BioMoGo DNA midsole cushioning and rebounding rubber deliver comfort without adding extra weight – perfect for days when you??re working on your speed.LIGHTWEIGHT FIT: The one-piece mesh upper and internal bootie are so light and breezy, they feel like they??re not even there.QUICK TRANSITIONS: The Midfoot Transition Zone is shaped to go from heel to toe quickly.WEAR TESTERS SAY: The shoe transitions nicely as I stride. I feel like I can plant very hard to dig in and get a good run out of the shoe. It handles very nice in wet conditions, more so than the last pair of Launches I have. The overall energy transfer is amazing.