Rain or shine, you'll be ready for your next run or walk with the Brooks Adrenaline GTS 23 GTX. This shoe gives you support and stability exactly where and when you need it with GuideRail® 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 in our Brooks Adrenaline GTS 23 review said, "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.” Combined with a waterproof upper for all-weather protection, the Brooks Adrenaline GTS 23 GTX makes it easier than ever to do more outside. Details Upper: A waterproof GoreTex upper offers you comfort and breathability no matter the weather.Midsole: DNA Loft v2 is a softer and lighter version that gives you plenty of cushion and bounce. Stability technology: GuideRails® holistic support system is Brook’s innovative technology that supports your body in its natural motion path while keeping excess movement in check. The GuideRails act like bumpers on a bowling alley, keeping your ball straight and ready to knock down some pins.