Brooks Adrenaline GTS 23 GTX Women’s Running Shoes 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. Women’s 7.5 in excellent condition.