Saucony Grid Cohesion TR Soft fabric lining provides sturdy support with less irritation HRC Strobel Board and Non-Visible Grid System design for better mobility on uneven terrain Triangular lug design for cushioning and traction on any trail Leather and synthetic upper for durable, breathable comfort Patented adiWEAR carbon rubber compound in the outsole provides maximum damage resistance while the exclusive TraXion tread pattern supplies great multidirectional grip