Zicome Chair Leg Caps Feet Pads Floor Protectors, Set of 12 (Round) Opening size: 25mm to 29mm; Bottom diameter: 33mm; Height:. 31mm Silicon floor protectors with a felt pad on the bottom, glides easily and quietly across the floor Soft enough to make putting it on easy, but stiff enough to hold shape once in place Almost invisible once on the chair Floor savers to protect it from scratches and gouges