Ergoplay Professional Suction Cup

I was seriously disappointed with the suction cups which came with my Ergoplay guitar rest and so went back to the site to see if I had missed something. On the site I discovered the professional suction cups. These cups bear no resemblance to the originals, and never come unseated, i.e. they totally solve the the product shortfall, making the ErgoPlay guitar rest the best I have ever used.