I have always been cold natured. I have a BHS and it is marginally effective and I do have good clothes. I really like the Minus 33 stuff. I can't say for sure about circulation but I went to one of those LifeScreening things all they said all is well as did the Dr. who reattached my Achilles in Dec. 2019. So I just do not know quess I will just keep on keeping on. Thanks for your time.