Tucker Ergo balance trail Glide Stirrups 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. Available in 1 1/2" , 2 1/2" or 3" neck. Sold as a pair. Features: Lightweight Specially designed to decrease knee and ankle fatigue Thick foot cushion for shock absorption Wide base for support