A viral post on social media recently brought attention to a surprisingly common question: What’s that strange raised line running across many bath towels? While internet users joked about it being a “face-to-butt separator” or even a towel’s “racing stripe,” the real explanation is far more practical.
That line is actually called a dobby border. While it may look purely decorative at first glance, it serves an important functional purpose. Textile experts say it helps towels hold their shape and last longer, especially after going through many laundry cycles.
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