The National MS Society gives free ice vests, every 4 years or so. Look them up to get the toll free number.
I agree @A MyMSTeam Member
yes it can help but beware-they can be bulky on a person's body.
A cooling vest never occurred to me. I get those overheating events but mostly if I have too much exposure or overexert. Hmm... let us know how that works. It takes me a long time to get cooled down when I start runaway overheating.