Sorry, I'm not following you.
The waist is 31"
since a person can't try on the jeans (when buying jeans , pants etc online). then use what is called a half size.
The actual pants waist size is not the same with all brands , or even within brands if model # type is different. That is why online sellers do what is called a
"half size" when selling pants and especially after they are washed and dried.
half size ... This is where one lays down the jeans (buttoned) and takes a measuring tape and measure side to side ((ie half size). Then the online person knows if the pants will actually fit.
This is very common on selling jeans online. All brands have different sizes . Meaning a l"abel size 33", could be size 30", 31, 32 or 33". So in this case , unless a person has the same exact Levis 505's with a label that says 33" and knows the size that fits their waist. But someone who does not own a pair of 505's is taking a risk the waist is more than likely not to fit.
The length of pants is usually accurate and even if larger can be hemmed. So it is only the half size one needs to advertise when selling jeans.
Also not, as in this pic below... Just because the measurement is 16" does not mean the actual pants size is 32. It could be 33, 34 etc. Half size is a more accurate way for a buyer to know if the pants will fit. And will help you to sell the jeans because anyone can measure there own jeans and then know their half size and if the pants they are buying will indeed fit.
When selling knives it is common for some to ask if the blade is centered, or if there is lock rock,.. etc. With selling used or washed jeans on secondary market the "half size" question is very common! But if you are a none-knife guy selling a knife you may not know the terminology used by a person who is used to buying knives on the secondary market.
