Watch out for Joe's Rubber Tubeless Rim Strip Sizing
 

If you're ever looking at buy Joe's Rubber Tubeless Kits or Rim strips, be aware that the sizing on their website is completely whack.
The rim width they fit depends on the diameter of the rim. For example, I purchased the Yellow 19-25mm kit, because my 26" rim is 19mm wide. Turns out that according to the packet the yellow width fits 23-25mm 26" rims, 20-24mm 27.5mm rims and 19-23mm 29" rims. There's no size chart on their website that shows this. Pretty dumb. I'm guessing I need the Blue 17mm to 19mm kit now, working on the assumption that the upper end of the range is for 26" rims and the lower is for 29" rims.