Synturfmats Pet Replacement Grass Mats for Large Dog Potty Training Pads 28"x40" Replacement grass mat for pet potty patch, which ideal for housebreaking your dog Made of environmental protective antibacterial materials, no addition agents that lead to hypersusceptibility Looks like real grass and perfect for use indoors, porches, patios, and balconies. So easy to clean, just rinse with soapy water Synthetic Grass Mat Size: 28"x40"