The Brooks Adrenaline GTS 23 Mens Running Trainer is a Newly updated design on a Brook's favourite with lighter cushioning than ever before. The men's Adrenaline GTS 23 offers a perfect balance of support and softness that results in a smooth ride for miles at every speed. Lace up and find out for yourself why these men's running shoes have been runner favorites for over twenty years. Built in Guide rails add support by stabilizing the foot on impact to keep in your natural stride. Updated midsole features a built in DNA Loft V2 cushioning for added underfoot comfort. Updated air mesh upper with 3D fit print for added breathability and structure. Standard 1D Width.