The 20" wheel unicycle is the most popular size of unicycle, a great all-rounder this Reflex unicycle is ideal for both indoor and outdoor riding. Perfect for beginners or those looking mastering tricks. This Unicycle features cotterless 127mm steel cranks, sealed main cap bearings, laced to a durable 36 hole steel rim. The saddle features a removable grab rail and is mounted to a 300mm knurled seat post.