The real purpose of those mysterious lines on towels

A recent viral post has shed light on a question many have wondered about: What is that raised line running across bath towels

Though jokingly dubbed a “face-to-butt separator” or a “racing stripe,” the feature has a far more practical purpose.

Known as a dobby border, it’s not merely decorative. Textile experts explain it helps towels retain their 

shape and withstand repeated laundering.

One of its main functions is reinforcement. The dobby border strengthens the towel’s edges, reducing fraying and wear over time.

It also prevents the ends from becoming too thick or bulky. This keeps the towel evenly shaped, easy to fold, and comfortable to use—all while preserving absorbency.

Additionally, the

border offers a subtle space for design. Manufacturers can add texture, patterns, or logos here without compromising softness or function.

So next time you reach for a towel, take a closer look. That small dobby border is a thoughtful detail, helping your towel last longer and perform better.

Brandi Passante is best known for her role in reality television, where she became a familiar face through her work on programs centered around auctions and resale businesses. Her public image has largely been shaped by her professional journey rather than personal exposure.

Over the years, she has built recognition through steady appearances in the