I bought one of those for mountain biking in North Dakota, Maah Daah Hey trail. The tube got very thin right at the valve stem. I used that on the rear, on the front used a regular tube. In both tubes added Slime sealant. I chose Slime as it was water soluable for cleanup.

We stopped to take a break where the trail crossed a gravel road, while having some water suddenly I hear this sound of escaping air. The thin spot on the thick tube got a puncture for no apparent reason, too close to the valve stem to patch. I blame the thin spot, that was where any stress of the tube would be concentrated.

I will never again buy a thorn resistant tube.

I do not have a suspension mountain bike, I put a suspension fork on my expedition bike:



I do not think of Nebraska as being that thorny, I would just use my normal touring tires but would be very careful when off pavement in a campsite.

On a different trip, I accidently forgot to be careful in the campsite, picked up quite a few thorns in the hundred or so feet that I rode the bike into the site. This was in West Texas, that was thorn country. This was on my folding bike. I did not use sealant. I was careful to remove all thorns before I started to roll again, none of us on that week long trip had any punctures. Most people were riding road bikes, it was a van supported trip with ACA.



I have no opinion on Slime versus other brands of sealant, if I was going to ride in thorn country again I would probably use Slime since I own some. And have two regular tubes with Slime in them already. But my one week of experience with sealant is not enough to render an informed decision on the best brands.

If you add sealant in the valve, be very careful to clean out the valve stem carefully so that the sealant does not gum up the valve seats.

Some pumps like the Lezyne Micro Floor Drive threads onto the valve core instead of a normal chuck that clamps on. If you have removable cores, they can stay in the chuck when you take the valve off. It is possible to tighten the core with a wrench, or a friend of mine uses blue (removable) threadlocker on the threads for replaceable valve cores. So, you can use that pump on those cores, just giving you a forewarning here that you need to do something to avoid the core coming out with the chuck.