Keycap Sets segmentation by type classifies products according to material composition and manufacturing process, each influencing cost structure and market penetration. ABS caps, constituting about 45 % of volume, are injection‑molded, lightweight, and support vibrant dye‑sublimation, but exhibit higher shine over time. PBT caps, roughly 35 % of the market, offer superior resistance to wear, a matte finish, and double‑shot or dye‑sublimated legends that retain clarity, positioning them in the mid‑to‑high price tier. POM caps, a niche at 5 %, provide a smooth, low‑friction surface favored in premium ergonomic keyboards. Double‑shot manufacturing, applicable to both ABS and PBT, accounts for 12 % of sales, delivering legends that never fade because the legend layer is molded as a separate filament. Dye‑sublimated caps, about 8 %, embed pigment within the plastic matrix, delivering long‑lasting coloration especially on PBT. These type distinctions constitute the core of the market taxonomy, informing product‑development cycles and pricing strategies.