The Brooks Adrenaline GTS 18 is the ultimate go-to shoe for those in need of support. With the addition of new GuideRails that creates a full support system, the Adrenaline GTS 19 has improved soft cushioning with not only BioMoGo DNA but also DNA LOFT. TECHNOLOGY BioMogo DNA LOFT DNA Soft and plush mesh upper No-sew overlays helping to reduce pressure Internal support saddle for support Pre owned have some scuffs as shown in pic. In good condition. From a smoke free home.