Non-Slip Rug Pads For Rugs On CARPET. Designed For RUG On CARPET Anti-Slip. Limits Rugs/Exercise/Door Mats From Moving On CARPET. Includes 4 Spiked Plastic Adhesive Rug Pads. Spiked Pads Limit Rugs From Shifting On Carpet. BRAND NEW! Carpet Anchor.