How to set up characteristics? They don't work

santasgadgets.co.uk/
On the homepage the last item says choose options, but once you click into it: santasgadgets.co.uk/product/cid-11 you just get add to cart.

How to make the characteristics appear?

It means that the characteristic(s) of that product are not setup properly. Please try the manipulation mentioned at the end of the Characteristics section of that page:
www.hikashop.com/en/support/documentatio...html#characteristics
That should hopefully solve the problem.