This is the best tubeless tape easy to apply and sits in the rim well, durable and flexible, 2 layers is plenty but 1 is sufficient, holds air. I've scrapped other tape jobs with inferior tape but I have never had to re-tape when I applied Stan's. Even when rim tape is supplied in my wheel order, I will only use Stan's.
nice alternative to cloth or thicker synthetic rim tape/strips, being thinner may help with mounting those really light tires like Kenda Kaliente on Mavic Open Pro rims. One thing that happened to the roll I got, as I applied the tape to the rim, there was a small cut on the end of the tape and it separated a thin strip on one edge from the main piece I was applying to the rim, after I applied a few feet, I notice the tape I was applying getting thinner at the rim and a ridge growing on one side of the roll where the sliver left there was growing in width, I had to start over after I wasted a few feet of the tape. Luckily, there was enough to finish both wheels.