The type segmentation of the Radiological Protection Fibre market is dominated by two principal categories: lead‑based fibres and non‑lead fibres. Lead‑based fibres, traditionally composed of lead oxides embedded in polymer matrices, continue to command the largest share due to their well‑established attenuation performance and regulatory familiarity, accounting for roughly 55 % of total market volume. Non‑lead alternatives are subdivided into tungsten‑based, bismuth‑based, and polymer‑composite fibres. Tungsten‑based fibres provide comparable density to lead with superior mechanical strength, capturing about 20 % of the market. Bismuth‑based fibres, valued for lower toxicity, hold approximately 12 % of demand, particularly in regions with strict environmental legislation. Polymer‑composite fibres, leveraging high‑performance polymers and nano‑fillers, represent the remaining 13 % and are expanding rapidly in niche applications where flexibility and weight reduction are critical. Together, these type sub‑segments define the overall market size by aligning material properties with cost, safety, and performance criteria across end‑users.