When it comes to selecting outdoor dining chairs, there are several key features to consider. First and foremost, durability is of utmost importance. Look for chairs made from high-quality materials such as weather-resistant aluminum or teak wood that can withstand the elements year-round. Additionally, comfort should not be overlooked. Opt for chairs with ergonomic designs and cushioned seats or sling style ones for optimal relaxation during long meals. Another crucial aspect is versatility - choose chairs that are lightweight and easy to move around, allowing you to rearrange your outdoor dining area effortlessly. Lastly, consider the aesthetic appeal of the chairs, ensuring they complement your outdoor space's overall style and ambiance.