These just stick on the bottom and gripped my laminate floor like a champ. We have hardwood floors and our modular couch would slide all the time with our dogs jumping on and off.
Did it with a box cutter and worked great. Adhesive is very strong and holds well. Easy to cut to size and very sticky and secure.
These leave a yellow mark on hardwood floors. Simply rub it off with a pink school eraser. They work somewhat; the mat definitely slips less, but it still slips.
Aneaseit soft silicone chair leg covers work great for our faux wicker patio set. Metal core leg was producing a small rust stain on the concrete surface after a rain. Easy to install and don't have any of the issues i stated above.
Sizing charts were very accurate. I wish they were 100% reliable.
The sizing of the x small is now 7/8-11/16 (22-26mm) which is too large for my stool legs. When dinning room chairs slide across tile grout the pads stick and actually come off. Tore within 1st week of using.