I have one of the lightweight Brosh Jackets and it is, in a word, flimsy. The arm straps tend to let the elbow protectors shift. They are airy but I wouldn't want to wreck in one. The yellow jacket you tested looks to be sturdier than mine. I can't speak to its abilities but I'd stay away from the gray one. It's better than a T-shirt but that's about it. Get some double-sided tape and stick some shoulder and elbow protectors to your bod. At least those would stay in place.