WW Mfg Co. jeans are “true to size”. This means that the waist is closer to your actual waist measurement. Most jeans sold today have at least 2 inches of “vanity sizing” added to the size marked on the tag. So, jeans with a tag size 30 will actually measure around 32 inches in the waist. Mine only have one half an inch of vanity. So, a WW Mfg tag size 30 actually measures 30.5. You can measure your waist but it might be better to measure a pair of jeans you already have that fit you well, preferably something with a high rise. Fold them in half from the side (not the front) and double that measurement. If they measure 17 then you need to order a size 34. You can see what that looks like in the picture below of a size 27 waist that measures 13.75 inches.