Ideal for casual riding, the Firmstrong bubble saddle is designed for serious comfort while sitting upright. It has a universal design that installs on any standard seat post, and is a great match for cruiser, commuter, hybrid, and beach bikes. The dual-spring system helps smooth out road bumps, and the oversized, cushioned leather saddle provides a wider, comfortable seating area. Firmstrong has been designing high quality, affordable bikes for over 10 years with a focus on blending style and functionality to create a fun, adventurous experience for riders -- not just a Mode of transportation.