A winter walk in the silent forest. Heads cleared by the herbal blend of balsam fir, pine needles and crisp cold air of the woody wonderland. This jar of joy will enhance the aroma of your home for up to 16 weeks. We use an eco-friendly solvent made from a renewable source. So it smells good and does good. Field Spotter's 'Friends Of The Field Guide' included with each diffuser. 100ml