Product details:

The OnCourt OffCourt Pickleball Sweet Spot Trainer provides the easiest way to feel and correct off-center hits! Slide it over any pickleball paddle in seconds. Use it as a warm-up aid to help avoid arm injury since it adds resistance to your paddle. Draws your focus to the Point of Contact, you will FEEL off-center hits as the ball will deflect off the Sweet Spot Boundary Circle.