This is 100% natural cotton material, a fine texture of aborbent cotton after the purified process. No colorant, or chemical treatment. No dry burning taste when e-liquid almost evaporated, which alerts you to refill e-liquid instantly. No e-liquid soaked smell or ordor after a long peroid. No cotton bruning taste on pure e-liquid flavor vaping. Name: Cotton Wick Brand Coil Master Weight 8g (Approx.)