All metals contain some amount of nickel. Titanium binds what tiny amounts of trace nickel are present and is the safest of all metals to contact if nickel allergic.
Titanium looks like upscale, expensive platinum. The hoop style is very fashionable and a nice alternative to the traditional stud.
Bloomdahl Hoops and Sleepers in pure homogenous medical grade titanium with a patent pending clasp - ingenious in all its simplicity! They are thin and ultra-lightweight, and of course, skin friendly! The wire is just .8mm thick – you will barely notice them in your ear. Available The sleepers with hanging stones are lightweight, comfortable, and funky!
The 12mm hoop is about the size of a dime.