What does Ring-Ring Denim mean?

The traditional method for producing denim, it uses ring-spun yarn for both warp and weft.

Heddels explains Ring-Ring Denim

Ring-ring, or dual-ring spun, denim is created from ring-spun yarn, a type of yarn created by rolling rather than pressing the fibers into shape.

It has an uneven look and feel and is considered more valuable and unique than open end denim. Ring-ring denim differs from ring-spun denim in that the ring-spun yarn is used for both the warp and weft during the weaving process rather than just the warp threads.

It is the most expensive choice out of ring-ring, ring-spun, and open end denim.

Additional Resources

Uneven thickness of ring-ring denim: