Ergo Balance Trail Glide™ stirrups are made of lightweight anodized aluminum alloy and stainless steel hardware. The special angled nylon top bar helps place rider's feet in a level position for decreased knee and ankle fatigue. A comfortable thick sponge rubber foot cushion provides for shock absorption. Wide base for maximum support. Base 5" wide, 4" deep. Black or brown. In 1 1/2" , 2 1/2" or 3" neck. Sold as a pair.