Push it to the next level in the Endorphin Pro 4, with PWRRUN PB and PWRRUN HG for propulsive movement and snappy Carbon plate for responsive speed. The lightweight mesh upper is engineered to provide support, ventilation and comfort. The breathable and airy single-layer mesh allows air to flow throughout the shoe to remove any unwanted heat built up so that you remain cool, dry and comfortable at all times. Be race-ready thanks to the silky smooth heel liner and integrated tongue, which works with the traditional lacing system to give a comfortable sock-like feel. The midsole features PWRRUN PB and PWRRUN HG technology for super responsive shock dampening that's proven to perform, providing lightweight and springy cushioning. PWRRUN PB Foam technology is 40% lighter than its predecessor, keeping weight to a minimum and allowing you to run faster and steadier for longer. Sandwiched between two layers of ultra-resilient and extra-soft PWRRUN PB Foam, the Endorphin Pro 4 features a Carbon-fibre plate that makes for powerful transitions to fuel every stride to get you to the finish line faster, delivering longitudinal stiffness for maximum metabolic efficiency. The revolutionary technology supports your foot as you move through your gait cycle and has been teamed with SPEEDROLL technology that works to propel you forward effortlessly at toe-off for a more dynamic run, allowing you to run faster, not harder. The top of the midsole features PWRRUN HG technology which provides lightweight and springy cushioning to keep your feet comfortable. This super foam is lighter and provides more rebound than previous PWRRUN foams, allowing you to squeeze all the speed you need to hit your new PB. The combination of foams allows for maximum bounce and cushioning. Designed to keep you in control on the track, the Saucony Endorphin Pro 4 Running Shoes feature an XT-900 outsole. The rubber forms a solid connection with the ground, providing a firm base for you to push off from, making your gait cycle more efficient. The chevron tread pattern provides traction on wet pavement and compact dirt and allows the sole to flex easily, ensuring fluid, unhindered movement. Reinforced high-abrasion zones provide optimal traction and durability.