Brooks Adrenaline GTS 23 Running Shoes The Brooks Adrenaline model has for years been the go-to for many runners looking for stability without that overly bulky feel. The latest GTS 23 Running Shoes have had a few minor improvements and deliver plush comfort alongside support in a lightweight package, and they're ideal for those with mild to moderate overpronation. GuideRails are what adds the support and firm foam is placed around the heel, guiding the foot from heel strike to toe-off, preventing excess movement and preventing the arch from falling in. The midsole is made up completely from DNA Loft v2. A lighter weight cushioning for comfort during runs and also when walking or standing for long periods. It's firmer in the front for more bounce on toe-off. Flex grooves in the outsole mean transitions are as smooth as they come for an incredibly natural feel. The enhanced engineered air mesh upper provides comfort and breathability with 3D Fit Print for added structure. It is breathable and lightweight to ensure your feet don't overheat during hard efforts.