8mm Humidifier Filter Cotton Stick Replacement Absorbent Sponge Wick for USB Humidifier Car Aroma Diffuser Cotton Filter Core

✅ High density absorbent cotton, stable water absorption to maintain consistent fog output✅ 7mm/8mm optional diameter, fit most USB mini humidifiers & car diffusers✅ Cuttable design, easily trimmed to match different humidifier sizes✅ Tough cotton material, anti-deformation, durable for long-term use✅ Easy to replace, ideal spare part for household and car small humidifiers