Gravity Defyer Proven Pain Relief Men's G-Defy.

Gravity Defyer Mens Clinically Proven To Relieve Knee Pain Walking Shoes Ion. Don't let anything slow you down. Stay active in the super lightweight Ion. Play hard: it's superbly engineered to keep you securely on your feet while absorbing harmful impact and powering pitch perfect performance. The all black Ion is also slip-resistant which makes them the perfect work shoes for standing, walking and being on your feet all day, whether it be on concrete or any other hard and unforgiving surface.