These TGCF keychains are really cute.
I have them for over a year now and although I was worried they were going to get sticky eventually (something that happens a lot with items of the same rubber material) so far there is no change in their condition.
I do have to say that I have two silicone bags near them to hopefully keep them from 'sweating' and avoid the stickyness issue for as long as possible.
But the material is something to consider upon making the purchase.