The Brooks Men's Defyance 3 Running Shoes takes its rightful place in the neutral spotlight. Sure, it's got the famous fit, feel and balance of the Adrenaline™ GTS, but this isn't just a spinoff. The Brooks Men's Defyance 3 Running Shoe is a star in its own right.The Defyance 3 features Medial DRB® Accel for a smooth ride with just a touch of support for a neutral shoe and bio MOGO which makes the shoe break down 50 times faster once its hit the landfill. The Brooks Men's Defyance 3 Running Shoes are fast on your feet and in the green department. The Brooks Men's Defyance 3 Running Shoes weigh a mere 10.7 oz, that will keep any runner light and happy thier feet.