You already love the support. Now it comes with even more softness in the Adrenaline GTS 21, a road-running shoe that feels like it was made for just your stride. The engineered upper hugs the foot for a secure fit while also improving breathability. What’s new? DNA LOFT cushioning goes beyond the heel, all the way to the forefoot, for a buttery smooth stride. While the DNA LOFT is Brooks’ softest cushioning, you can be certain that it won’t feel too squishy so that it remains durable for your longest runs. All of Brooks running shoes prioritize comfort, but their GuideRails technology adds support by keeping excess movement in check, so that you stay in your natural stride even when you get tired.