ChiaoGoo needles are made of Moso bamboo, the largest and strongest bamboo in the world. The coloring is completely natural; no dyes or stains are used to achieve the warm brown shade. This package contains 5 pairs of needles in sizes 1/2.25mm, 1.5/2.5mm, 2/2.75mm, 2.5/3mm and 3/3.25mm, 12 stitch markers and 5 inch needle gauge within one3.5x7x.75 inch zippered case. WARNING: Choking Hazard- small parts. Not for children under 3 years. Imported.