I'm not sure. I think for the price 20 minutes of cool is not long enough. I ended up buying an ice bag. It lasts for about 12 hours. It only cost me around $12 dollars. I'm sure I would have needed the extension belt and that would have really been annoying.
No the revix hip ice pack wrap does not have a chemical odor. I did not smell anything.
It’s fairly light and flexible. The straps are adjustable and it stays in place.
This cold pack stays cold to last much longer than the 15 to 30 minutes typically recommended for “icing”. And it re-“freezes” quick enough to be ready for the next icing session.