Relax while you write. This essential oil diffuser pen blends everyday function with a little aromatherapy — apply your favorite oil to the lava bead, lock it into the stylish cage, and enjoy a soft lavender scent as you go. A unique, giftable desk companion. Lava bead holds lavender (or any) essential oil Refillable with a standard D1 ink refill Materials: metal, card stock, lava bead & essential oil Size: 2.375" W · 7.5" L Care: damp wipe only