The Types segment classifies twist caps by material and functional design. Plastic caps dominate with an estimated 55 % share, favored for their low cost, lightweight nature, and ease of molding into complex geometries. Metal caps, primarily aluminum, hold about 25 % of the market, offering superior barrier properties and a premium aesthetic for high‑end beverage brands. Composite caps, combining plastic liners with metal shells, account for roughly 12 % and are employed where both strength and seal integrity are required. Finally, Specialty caps—such as tamper‑evident, child‑resistant, and refillable variants—make up the remaining 8 %, serving niche regulatory or sustainability demands. Each type contributes uniquely to the market taxonomy, influencing supply‑chain dynamics, price points, and adoption rates across the application spectrum.