The XA PRO 3D GTX are trail shoes which have been designed for running in harsh conditions and wetter trails. The SensiFit upper comfortably encloses the feet and is made of water resistant materials such as GORE-TEX. It prevents water from getting into the shoes through the upper. Although the upper is waterproof it is also highly breathable and knows to wick away moisture from the inside to the outside. The Quicklace system ensures an excellent fit and ensures that the laces don't loosen up during your run.The EnergyCell midsole is made of EVA material. This cushioning material effectively attenuates shocks and divides the pressure over the feet. It also returns energy with every step you take and offers resistant to impact shocks during trail runs. The Ortholite sockliner offers extra comfort. The 3D Advanced Chassis, found in between the midsole and the outsole, offers a lot of protection and stability to the feet. The Contragrip MA outsole is very durable and offers excellent grip on wet and loose undergrounds as well as on dry and hard surfaces.