Diffuser Slap Bracelets comes with one lava stone insert and 5 diffuser pads. Can be used to put bug Repellent oils, sleep support oils, calming oils, oils for breathing the options are endless. Simply add the correct amount of oils ensuring you use a carrier oil as well. Diffuser pads last 3 days approx before you need to add more oils or wash n leave to dry before reusing. Caution near eyes, always wash hands after use.