Glasshouse Fragrances candles use only the highest quality soy blend wax and all natural lead-free cotton wicks to encourage a burn that is pure and intensely fragrant. Double Wick Candle: 13.4 oz, up to 65 hours burn time Triple Wick Candle: 26.8 oz, up to 100 hours burn time Diffuser: 250 ml, lasts approximately 3 months opened