I always order the same size and am always really happy with the product. My hubby has been wearing them for many many years.  Always works for him.  This time I notice the waist size is about 1 inch smaller than ever before.  Now, I know you might say maybe his waist has grown, but actually it is the jeans waist size that is smaller.  I guess he will just have to suck it up. Or suck it in.