Amazon.co.jp: Adult Mountain Bike 26in Unisex Foldable Outdoor Bicycle 21 Speed (24 Speed,27 Speed) Full Suspension MTB Bike Double Disc Brake Bicycle : Sports & Outdoors
Amazon.com : Diamondback Bicycles Overdrive Hardtail Mountain Bike with 27.5" Wheels, 18"/Medium, Red : Sports & Outdoors
Amazon.com : Redfire Mens Mountain Bike, 27.5-Inch Wheels, 21-Speed Shimano Drivetrain, Aluminum Frame and Dual Disc Brakes, Lock-Out Suspension Fork, Hardtail MTB Bicycle for Womens Adult Matte Black : Sports & Outdoors
Amazon.com : Hiland Aluminum Mountain Bike 27 Speeds, Hydraulic Disc-Brakes,Lock-Out Suspension Fork,27.5 inch Wheel,for Men Mens Mountain Bike Bicycle 3Sizes : Sports & Outdoors