i have got the magnets off ebay in magnetic rug kit and sewen them in to cooler workes great can place them wher needed most workes great befor and after work was about £45 on ebay
oval patches with 8 or so magnets in each and came in a pack of 10
my boy had sufferd from either a twisted pelvis of small fracture and was having sproths theripes every 4 weeks and she sugested one but so expensive so did some reserch and found this so had a go with this and sport theripist seams to do the job been sound for 8 months and no so much looser over back end and we even track up so would defo reccomend them