Hybrid beds offer great edge support, this means they have a strong structural integrity due to the spring system, they are supportive to your whole body all the way out to the edges.
The spring and foam combination works to contour the body and provides pressure point relief wherever needed. The hybrid mattress is good for your back as it provides structural support, which encourages proper sleep posture and spinal alignment while the rest of your body is given love from the foam that it may not necessarily get from a spring mattress.
A hybrid mattress offers a little bounce that memory foam mattresses do not give, instead of the sinking feeling you get from a memory foam, the hybrid mattress offers more bounce yet comforting foam and airflow with the innerspring core which allows for a cooler night's sleep.
The hybrid mattress also helps reduce motion transfer for the lighter sleepers out there, this is because of the individually wrapped springs which move separately from each other, however traditional springs move all at once which isn't good for motion transfer and is more likely to wake you up.