Umbra® Suction Cup Shelf 5 "Surprised by review" Mr McPeake 07 August 2015 My wife bought this product and the bigger cup a couple of weeks ago. I consider these excellent products - so much so that I am now considering putting them in the leisure centre that I manage. They are stuck like glue onto our shower tiles! A note from the team Thank you for placing your review. We're pleased to hear you've been delighted with this product and plan to use them in the leisure centre but must point out they are for domestic use only.