Innovative heaters that use a system of replaceable inserts (REFILL SYSTEM) burn almost 100% and allow you to reuse the same cup. This product has a positive effect on the environment, we save aluminum and plastic that are waste after burning. One small package saves 75 grams of plastic. Together, we can save thousands of tons of plastic and aluminum thrown into the trash. Eco Candle Light candles burn for 6 hours giving 175% more light than conventional tea lights.