With its flat-edged impact zone, Devil Ball exaggerates the effect of your putter’s face angle causing imperfect strokes to deviate much further offline than a regular golf ball.

Each Devil Ball has three built-in difficulty levels, just rotate the ball so that you are hitting a rounder (easier) or flatter (harder) part of the ball.

When used on the most difficult setting it is twice as hard to hole a 3-foot putt with Devil Ball than with a regular golf ball.