1 Box of 12 Brownie Batter Puffs Our most popular chocolatey puff. Gluten-free brownie-marshmallow. This Puff has a delicious brownie batter flavor, perfect fluffy texture, and it is covered in Built’s signature chocolaty coat. This will have you completely forgetting that you are eating a protein bar. No need to pinch yourself, this is real life.  Factory seconds are BUILT products that are almost perfect, but not entirely. Same amazing taste and texture, but not quite hitting our standards of size and weight. That’s it. And that’s why you get them at a sweet little discount … while quantities last. *All Factory Second sales are final.