I have my front tire with sealant in it. So far, no flats in it.

The rear tire has a "thorn resistant" tube, Sunlite brand. A bit small for my tire according to the box but it does work without any issues. Haven't had it a week, though, so no idea how it'll hold up. It's a tough sucker, though, compared to the stock tube I pulled out. Like a bloody garden hose.

I've been considering the kevlar lining myself, as there's quite a bit of broken glass in some places of "The Park", but I don't know anything about them.

M.