Be ready for your next run or walk with the Brooks Adrenaline GTS 23. This shoe gives you support and stability exactly where and when you need it with Guide Rail® technology. It keeps your body in its natural motion path by helping to address the deviation in your ankle and knee joints, perfect for those who have flexible arches or overpronate. One reviewer stated "the firm midsole foam in combination with the Guide Rails provides plenty of guidance and support, making it a great option for those seeking a stable ride," in our Brooks Adrenaline GTS 23 review. With the Brooks Adrenaline GTS 23, it is easier and more comfortable to do more of what you love to do-run longer, play with your kids or walk your dog. Features Upper: An engineered air mesh upper with 3D Fit Print offers you comfort and breathability while also giving you additional structure and support, which helps runners with excessive pronation. Midsole: DNA Loft v2 is a softer and lighter version that gives you plenty of cushion and bounce. Stability technology: Guide Rails® holistic support system is Brook's innovative technology that supports your body in its natural motion path while keeping excess movement in check. The Guide Rails act like bumpers on a bowling alley, keeping your ball straight and ready to knock down some pins.