Michaels, Home Depot, Target, etc. just look for sew on velcro, the sticky back stuff will be a nightmare. I'd go with something wide, maybe 2"? then just cut to size and sew on, most velcro sets come with both sides so cut the felt side to match and stick back on after you use them to keep from getting snagged on stuff. I stopped using the velcro after I switched from a 9K girdle to a ST one (the 9K had the velcro on the girdle), also most pro socks now don't have the velcro tabs so I changed over to a garter belt which I now prefer.
Not a bad idea! Thanks, I'll check it out. I thought about pulling some off an old pair of hockey shorts, but they're glued and stitched together. Figured it would be a nightmare to take off.