Love love love these shoes. Was skeptical about Sketchers as an official performance brand, but that's the reality. The responsiveness of the Hyper Burst foam is a real feeling; crazy light and bouncy. I also have the VaporFly 4% and they are on par if not better in terms of responsiveness and bounce. It fits better than the VaporFly and is much better value for money. The Hyper Burst midsole offers excellent cushioning for long-distance runs, but is still responsive enough for fast-paced workouts. The VaporFly feels more like a pure racing shoe. I ran about 100km in them and the midsole showed no signs of sagging and held up relatively well. I had doubts about the rubber sole. for their durability, but so far I'm pleasantly surprised at how well they hold up. The rubber outsole combined with the durable Hyper Burst should last the shoe for some time. These shoes are perfect for those looking for a versatile, lightweight shoe. which can be used for long distance runs before daily training.