When you pick up a bath towel, you might notice those little lines or ridges near the edges. They may seem decorative, but they actually serve an important purpose. These lines, often called dobie or dobby borders, are woven patterns integrated into the fabric. Unlike the rest of the towel, which is made of loops of cotton yarn for absorbency, the dobby borders are tighter and flatter. This structure adds strength to the towel, preventing the edges from fraying or stretching over time. The result is greater durability and a cleaner, more polished look.

Beyond function, these lines can also serve as a visual guide for folding and presentation. The defined border helps align towels neatly, which is especially useful in hotels or organized households. Folding along the lines ensures consistency and symmetry, while the decorative patterns make it easier to distinguish between different towel sets. The design of these borders can vary widely, adding both practicality and aesthetic value.

The presence, design, and quality of the lines often indicate the towel’s craftsmanship and price range. High-end towels typically feature intricate dobby borders with detailed patterns, while lower-cost ones may have simpler weaves or none at all. These borders can even include brand logos or initials, offering a touch of luxury. Since the tightly woven edges dry faster than the plush center, they also help prevent mildew. In short, the lines on bath towels combine beauty and function — reinforcing structure, improving usability, and reflecting overall quality.