You'll need 'em.

Want more words than that? You will be using pool noodles for robot bumpers in the 2017 season. As in 2016, the pool noodles must be approximately 2 ½ in. diameter round, petal, or hex shaped in cross section. They may either be solid or hollow, but all noodles used on the robot at any one time will be required to be of the same construction and cross section – in other words, you will not be allowed to use solid round noodles on the bottom of your bumper and hollow petal noodles on the top.

If you are wondering what we mean by 'petal' shaped, we mean pool noodles with a cross section like this:

Photo credit

Frank