Our highly fragrant pumice stones, coloured for maximum impact, are unique! They come packed in approx 100g bags. Sleep Stones are impregnated with pure Lavender essential oil. You place them in the bed chamber in a basket or bowl. Before resting you shake them up. This activates the aroma for the next few hours thus aiding calm restful sleep. Dream Stones (scented with Patchouli and Jasmine) work in the same way.