Rainbow Red Dragon Car Air Freshener ~ Ffresnydd Aer Enfys y Ddraig Goch i’r car Fragrances available ~ Black Ice and New Car. Size 8.5 cm x 5 cm This product is made of high-density absorbent cotton paper, which can absorb and release fragrance efficiently. Adopted CMYK printing technology, the patterns are clear, bright and not easy to fade. Each piece is added with 4 grams of pure essential oil fragrance. The scent is fresh and mild with lasting fragrance retention. Note : Extreme heat can cause the essential oils to evaporate more quickly