The V-Air Solid Air Freshener Refill Sweet Pea & Wisteria, non aerosol refill cartridge, is uniquely constructed from ceramic, infused with high quality perfumes, then complemented by an integrated internal fragrance core. These combine and diffuse powerful key fragrance notes that are subtly different. The diffusion rate of fragrance moving through the ceramic capsule is much different to the fragrance evaporating from the surface of the fragrance core. The Sweet Pea & Wisteria fragrance is a sweet and delicate fragrance with hints of peony, rose and jasmine that’s brought to life by the bright and energetic notes of wisteria.