"3D" in the product number stands for the three dimensional aesthetic which comes with the tedious stone washing process that these distressed Selvedge jeans undergo. The jeans were created to mimic the fading and creasing which appear in raw denim only after frequent use over an extended period of time.
These jeans are washed and finished as each order comes in, one pair at a time. Also as they are stone washed by hand, no two pairs will be identical. Having a pair of washed denim like these are ideal for the desired creases and fading, which normally come in raw denim only after repeated use and washing.
Kojima is renowned for having starting the trend of "washed" jeans, and Pure Blue Japan use only the finest facilities for the precise process.