The Firmstrong Black Rock takes cruising to a new level with 29-inch wheels. Taller riders love the bigger wheels, and others enjoy the advantages of riding the Black Rock. Larger wheels help riders gain momentum and maintain speed, without extra exertion. A great fit for most men from 5ft, 5in to 6ft, 5in tall, it's ideal for cruising and recreational bike riding. The 19-inch length frame is constructed of durable aluminum, with 29-inch aluminum wheels with wide tires roll smooth and easy as well as cushion the bumps as you ride over them freely. The wide, oversized seat completes your comfort with dual springs that help make the ride soft and cushy. Both the seat and the handlebars can be adjusted for height and tilt to ensure maximum comfort. Whenever you need to stop, you simply pedal backwards, easing on the coaster brake. Other features include wide cruiser bike handlebars with synthetic leather grips, waffle tread tires, a guard to protect pant cuffs from getting caught in the chain, and a 350-pound maximum weight capacity. The bike is shipped 80 percent assembled. 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.