Not used very often and not abused but the stitching is already coming part. The memory foam aspect is good but the front needs a velcro or other form of clip to keep the two ends together to get any support otherwise it slips or is not really that comfortable.
Worked a couple of times without issue but then would never work again. Tried cleaning the window, cleaning the sucker, trying in another vehicle etc. Found the turn mechanism of "sucking" to the windscreen fiddly and difficult to achieve. When turning to secure the whole thing moved thereby losing any hope of suction, even when using two hands. Gave up and bought one that attaches to the air vent.