Introducing the Red Shark Fitness Bike Surf – Tailored for Cyclists of All Levels.Take Your Training to the Water:Catering to both cycling enthusiasts and beginners, the Red Shark Fitness Bike Surf invites you to embark on a unique fitness journey in the refreshing waters. Keep your workouts effective while staying comfortably cool.Unmatched Performance:Experience superior control with the 1:10 gearbox, a customizable stable-rudder system, and four interchangeable propellers. Pedal forward or backward with unwavering confidence on this state-of