Get a grip and lose the competition with the adidas adiStar Bejing MD track spikes. Get a grip... Typically, that phrase is used to tell you to simmer down and focus on the task at hand. It usually means you're stressed and slightly manic. You can forget all that stress and focus on giving your best in your event with the adidas adiStar Bejing MD track spikes. The very light spikes will give you just the right amount of dig to launch into your run, and the adiPRENE and LightStrike technology will give you the ultimate in support and cushioning without weighing you down.The adidas adiStar Bejing MD track spikes are ideally designed for midrange events, but they aren't recommended for cross country. We're guessing that judgment extends to some other things, like bull riding, skateboarding and basketball. We're sure you figured that out, right?