FX 1 is a hybrid bike with a lightweight aluminium frame and quality parts that perform wherever you like to ride. It\\\'s perfect for anyone looking to get out more, ride as a family, do a bit of exercise or commute to work on a versatile bike backed by a lifetime warranty. Key Features > Built in mounts make it easy to add racks and mudguards for added versatility > DuoTrap S (sold seperately) integrates a Bluetooth/ANT+ sensor into the frame. Log routes and track fitness progress on your computer or smart phone with no external sensor. Works with all major ANT+ wireless players, including Bontrager, Garmin, PowerTap and SRM > The high performance lightweight aluminium is continuously cold extruded and butted and formed into manipulated tube shapes to balance strength and save weight > Smart Wheel Size - The right wheel size is paired with your frame size to give the perfect fit to enhance your cycling experience > 27.5\\\" Wheel- XS and S29\\\" Wheel- M, ML, L, XL, XXL