80% Nylon, 20% Spandex. Fits Concept 2 Rowing Machines & Recumbent Bikes - Perfect for those needing a pad for exercise bike or extra padding on a rowing machine, this extra-wide recumbent bike seat cushion pad fits wide seats comfortably Comfort = Improved Endurance! Our padded exercise bike cushion lets you ride or row longer by reducing back pain, so you can focus on your workout with this incredibly comfy recumbent exercise bike seat cushion Stay Cool - Our gel bike seat cover keeps you comfy and cool during workouts. This self-regulating exercise bike seat cushion stays cooler than regular seats, making it ideal for long rides or rows Non-Slip Technology - The non-slip underside ensures your recumbent bike seat cushion stays put while pedaling. No more slipping around; just a steady and comfortable exercise bike cushion experience Designed for Comfort & Durability - Our recumbent exercise bike cushion is crafted to last. Perfect for anyone seeking a reliable, comfortable and long lasting bike seat cushion UPC 718194975614 ASIN B01MY4Q6UW Color Black Pad Type Foam / Gel Bike Type Recumbent Bike Brand Name Domain Cycling Manufacturer Domain Cycling Model Number A3-87MK-SBJB Material Type 80% Nylon / 20% Spandex Outer Material Gel Manufacturer Part Number A3-87MK-SBJB Item Dimensions L x W x H 16 L x 12 W x 1 H