Springy. Bouncy.  Reebok unveils the FloatZig 2 Running Shoes, the latest innovation within the award-winning FloatZig Running Shoe franchise, Reebok's performance running icon designed to make running more fun and enjoyable for all. New this season, the FloatZig 2 features the new SuperFloat+ Foam combined with a re-engineered Zig Tech technology in the midsole, to help create an even…