Steven Epstein presents Flip-It Caps on Shark Tank. Pic credit: ABC/Eric McCandless On the next episode of Shark Tank, Steven Epstein will share his invention, the Flip-It Cap, which helps you to get ...

A baseball cap with an extra bill that flips up to display a message isn’t likely to win a Nobel Prize. But the two brothers behind the Rally Flip Cap hope the novelty headware will be popular among ...