This is a great little belt for keeping your pants waistband from gapping and making you look bigger around the waist than you actually are.  Also closes that back gap over your bum.  Best of all, no bulky looking belt buckle under your shirt.  Gives you a nice clean silhouette.  Much better product than the similar Invisibelt, as this plastic is softer and more maleable.  The Invisibelt was very stiff and the edges were actually cutting into my skin at times.  I've now bought 3 of these.  I prefer this wider version for blue jeans, as it just seems to work better for me, but the smaller version is just as good.  I guess it just mostly depends on the size of the belt loops on individual pants.