Alamo Shoes in Chicago carries the Adrenaline GTS 21 by Brooks. You already love the support. Now it comes with even more softness in the women's Adrenaline GTS 21, a road-running shoe that feels like it was made for just your stride. DNA LOFT goes beyond the heel, all the way to the forefoot, for a buttery smooth stride. DNA LOFT is their softest cushioning but doesn’t feel too squishy or sacrifice durability. Brooks' cushioning technologies all start with DNA because they react to your unique stride.