Traveling Pants, Indeed: The Closet-Exchange Program thredUP Adds Kids' Clothes

In the average American closet, 25% of the clothing goes unworn. Meaning even as we venture out daily to malls, replenishing our stock with of-the-minute additions, a quarter of all our clothing nationwide is sitting idle and unused--sometimes with the tags still on. It was such a closet that confronted James Reinhart one November morning in 2008. Reinhart, a Harvard Business School graduate, suddenly saw his rows of clothes as a vast trove of opportunity. "There was tremendous waste...