I have finally accepted that I cannot bounce back from crashes like I once could in my 20's, yet I still continue to push the limits of my riding. While usually OK, sometimes this is not a fun combination. Figured I had better get some protection, and protection that I would actually use, not just put in my closet. I like the Roost Tee because it is soft foam, and mostly made of a mesh jersey material, which means it breathes very well and isn't hot. While it doesn't provide the same level of protection as hard plastic, it does give me some added protection over my collar bones and sternum/ribs. Makes me feel a little better about all those Bobsled laps I take. I don't advise this, but I have worn it in 90 degree weather, and faired OK - much better than if I was wearing heavy body armor. It's pretty low profile under a jersey - some of my riding buddies don't even notice I have it on at first. Overall, pretty happy that I can wear this for most rides and not notice it. Plus, it's very easy to stuff into my riding pack for climbs and pull out at the top for the downhill.