Durable comfort and practical design Outer antislip leather with a thickened sponge interior for reliable durability and comfortable support. Sturdy mounting system built with a carbon steel mount for toughness, plus stainless steel components for added strength. Extended back rest pad with a rear saddle cushion designed for family or intimate care, suitable for adults and teenagers, providing both support and comfort. Versatile and practical construction that offers a balanced softness and strong support, making it suitable for both mountain bikes and ebikes. Key benefits Enhances riding comfort on longer trips with a secure, cushioned seating surface. Strong and reliable mount materials ensure lasting performance under regular use. Back rest cushion adds support for caregivers or passengers, improving overall riding experience. Compatible with a range of bike types, including mountain bikes and ebikes, without sacrificing comfort or stability. Use scenarios Long mountain bike rides or daily commutes on an ebike where extended seating support is valued. Caregiver or family rides where an additional back support surface improves comfort for adults or older teenagers. Shared bike fleets or rental setups that require a durable, versatile seat option capable of supporting different rider needs. Specifications and performance highlights Material construction emphasizes outer antislip leather and a thickened sponge for durability and comfort. Mounting uses carbon steel with stainless steel components for enhanced strength and reliability. Extended back rest Pad designed for comfort and support across a range of rider sizes (adults and teenagers). Designed to work across both mountain bikes and ebikes, offering practical versatility without compromising performance.