Three-wheel bikes for seniors are available at the ElderStore.com. This site features a fold-and-go adult three-wheel bike with optional accessories that include a car rack, safety bag, bell, mirror and front basket.
The bike is available in two speeds: a standard three-wheel, and a three-speed that has added gears and is slightly heavier.
Because the bike folds, it can be stored in small spaces. It is lightweight, comes with two hand brakes and is ideal for seniors who are 4 to 6 feet tall. The bike has a step through frame that makes it a good choice for people with mobility and balance issues.