All of our candles are made with 100% natural soy wax. We do not use dyes or chemicals in our candles. Soy candles are much healthier option for you and your furry loved ones. We use high quality vessels and lids. Our lids are sealed and fit tightly. Each unit will burn for approximately 70+ hours if burnt properly. Candles are 4" high and 3.5" in diameter.