The first thing I noticed when unpacking the 5.5 Pro Chest Protector was its weight. It is heavier than my previous protector. I was a little concerned but once I put it on, I noticed the mobility was WAY better than my old protector. It was a little warmer than my previous protector too.
Once I was riding, I only noticed the excellent freedom of movement and forgot about the weight. Worth noting is that the extra weight is from the excellent padding. It did a great job of doing its job, by protecting me from roost, rock, and tree branches.