Specially engineered fibre reeds feature high-performance capillarity and fragrance diffusion along its' entire length, as well as having a homogeneous porous structure that provides a controlled and reliable rate of fragrance release. Don't confuse these high-end reeds with the cheaper natural reeds that clog easily, these reeds allow you to insert and walk away for continual fragrance diffusion without turning reeds upside down and getting oil over your hands or furniture.