Leggings segmentation by application reveals four principal categories that collectively define market dynamics. Athleisure accounts for the largest share, roughly 45 % of total revenue, driven by consumer preference for versatile, style‑forward garments that transition from gym to everyday settings; this segment benefits from premium pricing and high repeat purchase rates. Performance sports leggings, representing about 30 % of the market, are distinguished by technical fabrics, moisture‑wicking treatments, and compression features, attracting dedicated athletes and influencing OEM investment in R&D. Casual wear contributes approximately 20 % and is characterized by lower price points, simplified designs, and broad distribution through fast‑fashion channels, thereby expanding volume but limiting margin growth. The medical/compression niche, though modest at 5 %, is supported by clinical endorsements and reimbursement pathways, adding a stable, price‑insensitive revenue stream. Together, these application segments shape the overall Leggings market size, with each segment’s proportion reflecting distinct consumer drivers and supply‑chain considerations. Forecasts indicate that athleisure’s share may stabilize while performance sports could accelerate as smart‑fabric integration matures.