Feature: 1. Streamlined Narrow Front Design: For road bike and mountain bike, double track seat tube, streamlined narrow front design, does not grind the thigh, making driving more comfortable. 2. Tracked Carbon Fiber Structure: The base plate is made of tracked carbon fiber structure, artificial leather and genuine leather surface, which is soft and elastic to help you avoid damage to your bike and enjoy a longer ride. 3. Hollow Design: Designed with hollow ventilation, this bike chair reduces pressure on the perineum, providing airflow and comfort while riding long distances. 4. Universal Design: Universal design, easy to install and disassemble, there is not too many tedious steps, suitable for most mountain bikes and road bikes. 5. Easy to Use: 2‑3 grade filling thickness, comfortable and firm, easy to install and fine workmanship. Without any difficult requirements even though you use it for the first time. Specification: Item Type: Bicycle Leather Soft Saddle Weight: Approx.126g / 4.4oz Application: Fit For Road Bike And Mountain Bike Filling Thickness: 2-3 Grade (The Smaller The Number, The Thinner) Base Plate Material: Carbon Fiber Track Material: Carbon Fiber Padding Material: Artificial Leather + Genuine Leather Size: Approx.245 x 140mm / 9.6 x 5.5in Package List: 1 x Bicycle Saddle