Brooks Adrenaline GTS 23 Men's Running Shoes Crystal Grey/Surf the Web/Grey : Get a smooth ride at any speed in the Brooks Adrenaline GTS 23! Updated with lighter DNA LOFT v2 cushioning, this fan-favorite running shoe combines softness and support. Stay cool and comfortable during your miles in the engineered air mesh upper. Savor the smooth landings as GuideRails® holistic support system leads your body along its natural motion path. Lace up and find out why runners love the Brooks Adrenali