Has a sedentary lifestyle found you with more heft around the gut? Then it's time to get up and get moving. The Waistline Shirt features a ruled bottom hem to help you keep track of the inches around your waist. Simply wrap and fold around the area you wish to measure and see whether there's been an expansion or contraction.
Source - http://www.thinkofthe.com/product.php?name=waistline-shirt