The 4 Qt. Biochar Soil Amendment by WAKEFIELD is a 100% pure biochar product in a convenient bag packaging. Made in the United States, this organic soil amendment is designed to improve soil quality and support healthy plant growth. With a compact bag capacity of .06684 cu ft, this biochar soil amendment is easy to apply and perfect for enhancing the soil in your yard or garden. Plus, with a 90-day return policy, you can trust in the quality and effectiveness of this product for your plant care needs.