What is a key feature of the packaging used for Domino's sides?

The key feature of the packaging used for Domino's sides is that it is insulated to maintain temperature. This aspect is crucial for ensuring that the sides, such as breadsticks or wings, arrive at the customer's location still warm and at an optimal serving temperature. Proper insulation helps retain heat, which not only enhances the dining experience but also preserves food quality, allowing customers to enjoy their sides as intended.

This focus on temperature maintenance is essential for fast food delivery, as it contributes to customer satisfaction and reinforces the brand’s commitment to providing high-quality food. It helps differentiate Domino's from competitors who might not prioritize temperature retention in their packaging. The other choices, while pertinent to other aspects of packaging, do not encapsulate the primary focus on maintaining food temperature during delivery, making insulation the standout feature.