Memory Foam Chair Arm Pads 2 Pc. Set. The pads are made of genuine memory foam covered with very soft leather like skin. This combination gives these pads the softest feel to the Human touch. Upgrade your current factory installed armrests into one of the most comfortable arm pads in the market. Overall length: 10". Width: 3.9". Multi mounting hole patterns: 4", 5.5" and 7".