The top and bottom are gauze and the middle is absorbent cotton, the main components are medical absorbent cotton and medical gauze 1.Small volume 2.Good water absorption 3.100% highly absorbent cotton, pure white. 4.Flexibility, conforms easily, maintains its shape when wet. 5.Soft ,pliable, non-linting ,non-irritating ,No cellulose rayon fibers. 6.No cellulose, no rayon fibers ,No metal, no glass, no grease. 7.Good air permeability. 8.Will not adhere to mucous membranes. 9.Maintain shape better when wet.