Multifunctional smartphone-case
no
first, i have to say that quality matters... for example, improving leather or anything.
key case
nice colours!
i have no idea.
think about the big competitors in this market. is it really profitable for you???
more extras
sorry, but it isn't an innovation. i can still buy these products with different extras.
as i said, 15 is always negotiable.
initials on the cover!