Ideal for your outdoor fire pit or fireplace. Constructed of concrete and steel. Finished to look like oak logs. No odor, and no mess to clean up. Just add Real Flame Gel (sold separately) to get your fire started. Our Outdoor Log Set provides real fire romance, minus the wood, smoke, and ashes. This outdoor log set produces a natural, eco-friendly, and clean-burning fire.. . . . . Includes a decorative lava rock. Note: Do not add fuel of any sort to an existing fire. Follow the product's cool-down directions exactly. Lighting a gel-fueled product before it has properly cooled can result in injury.