I love this shower caddy bath shelf. It has answered all my problems with my shower storage. I used to have one of those tall caddy's that kept falling down. I was hesitant to purchase this. Honestly I didn't believe that suction would work and remain sturdy over time. I was talking from experience with the old school suction cups not this amazing advanced system. Now for the shelf. It is very attractive, the knobs add the perfect decorative look and it is amazingly large. It holds much more than in the pictures they show for examples. It is 15 inches in length and weight is not an issue when put up correctly. Why I say this is the directions are pretty clear on how to install, especially how to get it up without that forward slant many do in error. Follow step by step and look at the diagrams. So I found the directions 90% accurate. After you put up the black suction cups and put the shelf in place then tightening the knobs you wait 2 hours and tighten till you can't anymore. This is where I think many may find their shelf does not stay up. The directions state to be sure to turn the knobs at least 7 full turns to keep the shelf securely in place. I am a strong guy and I honestly can't tell you the number of times I had to turn the knobs fully till they were finally fully tightened. It was at least 14 full turns on each knob before they would not move at all. I worry that for people who don't have good strength in their hands they may feel it is fully done after the 7 turns. I don't think that is enough. Get someone you know has good hand strength to help you install this. Do all the turns fully and this shelf will remain in place strongly and firmly. It is very easy to install - just be sure to turn those knobs enough. The suction method is no gimmick and I am so impressed with how it works. I have had it up for weeks now and it is holding a lot and is fully working as advertised. Looks great, holds a lot - what more could you want. I will buy another if the need arises but honestly this holds pretty much everything I need. Highly recommend.