95% Organic. Easy Access Tear FastPak® then push Shot Blocks® up & out. Sleek & Portable Enables one-hand use and easily fits in a bike jersey, running shorts or backpack. FastPak®, Sports Nutrition on the Fly As an athlete and Clif Bar s founder, I ve enjoyed my share of Clif® Bars and Clif Shot® energy gel. But after countless miles of training and racing, it was time to expand the options, which is why we created Clif Shot Bloks®. They come in delicious, bite-sized pieces so you can easily customize your nutrition - on the fly. Plus, with the unique FastPak®, accessing your nutrition has never been eas.