Doesn't really roll.
Comes with handle and 2 ice rollers (with plastic for the metal portion of the roller).  The rollers push in or pull out of handle.  The metal part that gets cold is 1.75" and round.  There is nothing to keep the coves on the rollers.  Have to store vertical or back in box that it came in.  To use, just put metal ice rollers into freezer/fridge to make the cold and then put onto handle for use.  These rotate and are really hard to make them roll/rotate.  Most of the time, they kind of slide on your face or forehead.  Think it is a bad design for a "roller".  Can kind of use just for putting cold metal round part on face or eye area so I guess not totally useless.  Only 2 stars and don't recommend.
Rating: 2 stars