Who doesn't want a nice six-pack?
A six pack requires 2 things. Low body fat, and definition in the ab muscles.
While unfortunately, ab exercises don't actually help you lose that much fat, they do make your abs more defined by strengthening your ab muscle.
And the ab wheel is known to be one of the best exercises to do for better abs. Just ask Athlean-X, one of the most informative fitness channels on YouTube. And make sure to watch this video to learn the proper form for this workout and to maximize the abs for the most definition.
This is a double-wheeled ab wheel that is not only durable, but comes in a few different colors.