This is a well made product. RDX are a reliable producer of martial arts equipment and I often purchase items from them.
I purchased the 12kg vest. I am used to handling fairly heavy weights but this vest is heavy!!
It certainly does the job when it comes to adding a new dimension to MMA style training and certainly makes a difference to your grappling game when coming against heavier opponents.
The vest is very well put together, although you feel like Batman when you have it on.
If anything, it would be better if weights could be adjusted- but it isn't that kind of vest. Of more concern is the fitting around the shoulders. This is a large piece of kit and the fitting around the shoulders means that any action involving raising the hands ( like keeping your guard up or actaully punching) is uncomfortable on smaller framed guys.
I've found it good for body-weight type excercises like pressups but also practising takedowns and moving around a grappling bag etc.
It is a bit bulky so it isn't comfortable if you are on your back.