adidas Running is taking advantage of Instagram’s new voting feature by putting the power in the hands of its followers. Users will have the opportunity to vote between options on various aspects of the Ultra Boost such as the cage, heel, Primeknit upper, and more. The final winning design will be created and fifty pairs will given out to lucky participants. After selecting all your designs, you must register to officially participate in the giveaway. To vote now, head to the adidas Running Instagram account.