Amazon.com : Schwinn High Timber Youth/Adult Mountain Bike for Men and Women, 27.5-Inch Wheels, 21-Speed, Steel Frame, Black : Sports & Outdoors
Amazon.com: Huffy Hardtail Mountain Trail Bike 24 inch, 26 inch, 27.5 inch
Amazon.com : Wheelspeed Electric Bike 26" X 4.0", 500W Motor & 20 MPH Fat Tires Electric Mountain Bike for Adults, 70 Miles Electric Bicycle with 48V 14.5Ah Removable Battery, 7-Speed E-Bike (Black) :