The Summit is StreetStrider's top-of-the-line model with 8 gears, perfect for riding around anywhere, from the urban commute to the open road, or even on the steepest hills. The StreetStrider Summit 8r comes in three rich colors: Galaxy Black, Breakwater Blue and Solar Yellow. It features the Shimano Nexus 8-speed transmission, and with the twist grip shifter, you can easily select the most comfortable gear wherever you stride. You can even climb the steepest hills. The 90 mm dual front drum brakes and rear caliper brake provide exceptional stopping power. The frame is constructed with aircraft grade aluminum and is incredibly strong, supporting riders up to 400 pounds. The 3-wheel design is safe, stable and simple to balance while striding. The intuitive lean-to-steer system works with the body's natural movements to provide complete control while also engaging your core muscles, something that stationary indoor ellipticals cannot do.