Upgrade your ride with the YLG Oversized Bike Seat featuring an adjustable backrest for enhanced comfort and support. With a generous cushion size of 13" x 10.5" x 4" and a 2.5" thick foam layer, this saddle is designed to reduce pressure on your hips and back, making long rides more enjoyable. The wing-shaped design expands the contact surface for better weight distribution, while the durable high-density PU surface is waterproof and wear-resistant, perfect for outdoor and indoor use. The adjustable backrest allows for a customized fit, or it can be removed entirely based on your preference. Compatible with tricycles, e-bikes, and stationary bikes, this seat includes all necessary installation parts for a quick and easy upgrade.