Two entrepreneurs from Placentia, California, pitch their solution to embarrassing underarm sweat marks and stains; brothers and best friends from Walnut Creek, California, believe their belt buckle that doubles as a wallet is the most convenient way... (more) to carry your essentials; U.S. Army veterans from Chicago, Illinois, hope to empower farmers in a war-torn country by helping them cultivate and harvest saffron; and a former executive chef from Colorado Springs, Colorado, with an unlikely story, thinks his multi-purpose mixing bowl will become the next go-to kitchen gadget. Also, a follow-up with Robin "Wombi" Rose and John Wise from Cambridge, Massachusetts, and their 3D paper pop-up greeting cards, LovePop, that Kevin O'Leary invested in during season 7.