Avia 2315 Mens Running Shoe. Avia 2315 running shoe offers top of the line technology with an exceptional fit. This shoe has a breathable mesh upper, with rubberized overlays for comfort and support. A full lace up front, padded tongue and collar combine for ultimate fit. A cushioning removable insole and soft fabric lining keep the foot cozy. The DCS Ultra midsole combines Cantilever technology and a polyurethane shank for cushioning, energy return and support. The traction patterned rubber sole offers reliable grip.