Advantages:
made of stainless steel and plastic, so very easy to clean and disinfect
no squeaky sounds (my jade roller started making these after a couple of uses)
can be put in the freezer (so it's extra cool and nice)
does not smell (after awhile, my jade roller had this metallic smell which is very unpleasant)
Disadvantages:
quite large, does not fit snug in the under-eye area