The bio-based bicomponent sheath-core fiber market is projected to grow from USD 933.1 million in 2026 to USD 2,109.7 million by 2036, at a CAGR of 8.5%. Bio-Based Sheath and Fossil Core will dominate with a 30.0% market share, while pla & derivatives will lead the polymer family segment with a 36.0% share.