Flat Tire Defender 2 Tubeless Protection Inserts

Great rim protection, perhaps one step down from Cush Core, but is poorly designed. It comes as a single length of foam (which has to be trimmed for wheels other than 29") then the two ends are joined with their included super glue to form a loop . The glueing process is difficult and critical. Despite my best effort, the join failed at the glue point about 3 months later. This resulted in the insert slumping within the tyre and a wheel that rotated like a hamster wheel with the hamster clinging to the cage. Once soaked in Stans the join could not be re-glued so I used two zip ties to form the loop. Later these pulled through the foam with the same result. I took more care with a (later) second insert and so far it is holding up but I am not confident. I have now switched to Tannus Armour which is lighter and is a more thought out design.