These candles match the STOFF Nagel candle holders beautifully. The candles are produced from paraffin wax, a pure mineral product cleansed of impure particles. Furthermore paraffin wax has the smallest carbon footprint and the least environmental impact of all waxes. The cotton wicks are made of 100% cotton, which affects the indoor climate less than traditional wicks, as fewer particles are released. The candles are solid-colored for an exclusive and rustic look. Due to their thin diameter, we advise against placing the candles near draft wind from doors and windows, as this may cause them to drip. Do not place the candles in direct sunlight.