Far from being decorative, it plays a key role in improving a towel’s durability and performance. According to textile professionals, the dobby border reinforces the towel’s structure, helping prevent fraying and wear after repeated washes. It also keeps the edges from becoming overly bulky, allowing the towel to remain soft, lightweight, and absorbent. For manufacturers, the border can double as a place for subtle patterns or branding, but its main function is practical.

Beyond performance, the dobby border also improves appearance. It provides a natural folding guide, helps towels hang neatly, and gives them a clean, finished look in bathrooms or linen closets. So the next time you grab a towel, remember: that mysterious line isn’t random at all. It’s quietly doing the hard work of keeping your towel strong, functional, and looking good — one of life’s small but satisfying design secrets.