Primo PR608 Lump Charcoal Cowboy Brand Primos 20 lb bag of 100% All-Natural Lump Charcoal is the premium choice fuel for grills and smokers. This special blend of charcoal is free of tars and other harmful chemicals. It weighs less, lights faster, and burns hotter and longer than standard briquettes. When used in a Primo, a single load can be reused several times and when cooking low and slow, it can burn for up to 36 hours. With average use, a 20 lb bag can last up to 35 cooks. Cook with Primo natural lump charcoal alone or in combination with your favorite seasoned wood for a great smoky flavor.