Bouncy volume for long hair
The Cloud Nine system is excellent in that it's modular so you can choose how many of each size roller you want (as opposed to most sets where you generally don't get enough of the sizes you really want). The velcro is perfect for those with fine, silky hair who may have trouble with rolling onto hot smooth ceramic rollers.
These 60mm rollers don't add a lot of wave to the hair - they're really just best for adding volume to the top section (roots and crown) on longer hair.
They're not an essential size, as the 50mm rollers will do something similar, but if you want to quickly add volume without too much effort, these will do the job.
Recommended to expand your Ultimate Set or build your own set.