At 2mm thick, our premium Ultra Low-Profile Rug Pad provides a smooth foundation and allows clearance beneath doorways. The felt top layer offers comfort underfoot while an underlayer of rubber adds a non-slip backing. The heat-fused layers ensure long wear, even in high-traffic areas. Pads are sized 51mm less than standard rug dimensions to ensure smooth, even edges. Pads may be trimmed to fit non-standard-sized rugs. Made in the USA. 100% synthetic felt and rubber.