Saucony Endorphin Speed 2 certainly won ́t disappoint you if you enjoyed the first version. Saucony have preserved the very popular and praised midsole and changed a few things in the upper to improve one of the most popular running shoes in 2020. You still get a fast running shoe which provides the sensation of effortless speed but now you also get an improved heel support, more room for your toes in the forefoot and a different mesh material. Saucony Endorphin Speed 2 Specifications Speedroll Technology PWRUN Midsole Full-length TPU plate. Improved upper Upper Saucony have changed the heel, so the shoe wraps itself better around your foot and there is more space around the forefoot, so your toes are able to move. A new mesh upper provides great support but also offers superb breathability. And last but not least the laces have been changed to ensure a perfect fit. Midsole Saucony haven ́t changed anything from the previous model and this makes sense as there was no room for improvement. You still get a midsole with PWRRUN PB, a full-length TPU plate and Speedroll technology. The combination of the soft and light PWRRUN PB and the rigid TPU plate works perfectly to make the shoe pop along at every step. In addition the Speedroll technology provides terrific propulsion. All these components work together to provide an amazing and fast running shoe. Outsole Saucony Endorphin Speed 2 is designed with a rubber compound outsole which provides a great grip at every step and at the same time provides stability in sharp turns.