Tire Rings® have been proven to be a great success as a gift for men and women for a variety of occasions including but not limited to: Christmas, birthdays, Fathers Day, Valentine’s Day, Graduation, anniversary, and as corporate awards and other marks of achievement.
If you don’t know the recipients ring size or exactly what style they like we suggest including the plastic finger gauge in a card with a brochure. This way you have something physical to present and you are less likely to order the incorrect size (this can also buy you a little time).
If you are ok with the recipient knowing they will be getting a ring but not that it will be a Tire Ring® then you could always just tell them to have themselves sized or use the sizer ahead of time.
Another option is to take an existing ring that you know fits the individual and bring that to a jeweler and have it sized. Please see sizing for more information on that subject.