Discover the best prices on Adidas backpack tech velocity Backpacks when you comparison shop at bizrate. Browse Adidas backpack tech velocity in Backpacks to find the lowest prices from Adidas. Narrow your search by price range, product specification, store, or style -- even caluclate your tax and shipping charges before buying. bizrate is your one-stop shop for Clothing & Accessory gifts: Buy Adidas Velocity II Tech Backpack - Black and Adidas Velocity II Tech Backpack - University Red.