soft and comfortable .mesh-design increases the friction-.make the rug not easy to slide or the items placed on the mat are not easy to Mesh-design & no-glue.good air permeability.thin.antislippery mat underlay not easy to leave the traces on carpets and floors The rug underlay mat is waterproof.easy to clean (Recommend Hand washable).strong and not easy to deform With grid-design.along the -.easily cut into any size and shape.such as rectangle.square.round. The rug underlay mat is waterproof, easy to clean (Recommend Hand washable), strong and not easy to deform.