Lang Dulay's style of weaving, rooted in the ancient tradition of T'nalak weaving, is renowned for its intricacy, precision, and deep cultural symbolism. As a T'boli master weaver, she primarily used abaca fibers (derived from the banana-like abaca plant), which are known for their strength and flexibility. The process of creating T'nalak is both labor-intensive and ceremonial, reflecting the spiritual connection between the weaver, her craft, and the T'boli people's culture.

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One of the defining features of Lang Dulay's weaving style is her ability to create complex, abstract patterns that are passed down through generations. Many of her designs are inspired by the natural world and T'boli folklore, with each pattern having its own meaning. Some of her signature designs include:

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• Bulinglangit (Clouds): Representing the skies and heavens.

• Kabangi (Butterfly): Symbolizing transformation and beauty.

• Bankiring (Hair bangs): A unique design resembling the distinct shape of hair fringes.

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What makes Lang Dulay's work particularly special is that she never used written guides or patterns. Instead, she relied on her memory, intuition, and the “dreamweaving” tradition, which involves weaving patterns seen in dreams—believed to be messages from ancestors. This practice links the art form to the spiritual realm, further enhancing its cultural importance.

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Her use of natural dyes from roots, leaves, and fruits also distinguishes her work, contributing to the unique earth-tone palette of T'nalak. Lang Dulay's weaving style, with its emphasis on traditional patterns and spiritual significance, is a remarkable example of how indigenous artistry is woven into the very fabric of cultural identity. Through her artistry, she not only preserved the heritage of the T'boli people but also elevated it to national and international recognition.