After breaking my ribs wearing a chest protector with no side protection, I decided I didn't want to do that again. This product provides the side protection I was looking for. As mentioned, it is pretty hot to wear. There are removable upper arm pads that I couldn't really figure out how they are supposed to fit, so I took them off. I wear elbow guards that offer some upper arm protection anyway.
This was both the first piece of chest protection and first neck brace I have purchased and worn...so I do not have a lot to compare it to. That being said, I love it. There was a great deal of internet chat re heat. I have been wearing it mid day in San Diego during the summer and I have been fine. Yes, I am warm, but never to the point of being distracted from the riding or feeling like I needed to take it off. Taken a few spills and its protected me well. Probably have not tested it to the point of thanking god I had it on, but it feels like it was do as good as a piece of plastic could hope to do in this world. Id recommend it.
When you wear this chest protector you really feel like you will survive a big get-off. Fits well and is comfortable. Well vented while offering significant chest, back and shoulder protection. Hope I never have to find out!