In this segment from Tuesday's Investor Beat, could Under Armour (UAA -1.73%) and iRobot (IRBT 3.58%) each have something to fear from these rapidly growing competitors? Join Motley Fool analysts Tim Hanson and Charly Travers as they each discuss one stock they'll be keeping a close eye on this week. Tim takes a look at WonderPants (NASDAQ:PANZ) and some of its international expansion efforts, while Charly discusses Carson Industries (NASDAQ:NOME), and its offering in the automated home cleaning robot space, the Home Gnome.