This stainless steel fire pit with unique structure not only brings warmth to you, but also offers you a visual flame feast. Multiple air vents with different shapes & the middle column with fire holes are designed for 3-level combustion which ensures high-efficiency burning & reduces annoying smoke. & the whole fire pit is made from premium stainless steel, which can withstand long-time burning. Moreover, a waterproof & sun protective cover is provided for longer service life of the fire pit. As for the fuels, there are multiple options to meet your different demands. Unique 3-Level Combustion: The unique structure of this fire pit will lead to 3-level combustion. As a result, the outstanding air circulating system & Oxygen-enriched fire technology ensure optimal heat with less smoke & wood. & the smokeless burning technology offers you a clean bonfire atmosphere. Attractive Flame Effect: In the primary combustion, the vent holes on the 2nd layer let direct air in & feed