Surface -Road Heel Drop-10 mm Weight -308 g/10.9 oz Dynamic DuoMax™ Support System This evolution of DuoMax® system enhances stability and support, with reduced weight and increased platform support. Rearfoot and Forefoot GEL® Technology Cushioning System Attenuates shock during impact and toe-off phases, and allows movement in multiple planes as the foot transitions through the gait cycle. Redesigned external heel counter helps keep the foot stable and provide a more comfortable stride