TR stands for trail and that means that this shoe has an outsole with a stud profile. This way you have grip in all conditions when walking on unpaved paths. Enjoy the perfect balance between grip, protection and stability and explore untouched nature reserves with this trail shoe! Midsole To make your runs comfortable, HOKA has added a CMEVA midsole that provides plenty of cushioning and effective protection while running. Upper With this shoe, the bottom of the heel is reinforced while the top is flexible, soft and comfortable. This will not put pressure on your heel bone. Wear sole The outsole is made of durabrasion rubber and has a coarse profile for great grip on any type of surface. Zones of abrasion-resistant rubber have been added to the heel and forefoot for improved durability. The geometry of the outsole is designed to ensure inherent stability and an efficient stride. Complete your trail experience with the HOKA Challenger ATR 7 GTX trail shoe!