I purchased this produce in Dec. 2022 and this is by far one of the worst penis pumps I have ever purchased throughout the years, Quality it seems, is designed to break, a very weak and thin air inlet nipple at the very top as well as a weak hose tube connection at the pump part as well. The pump is just adequate in size to perform the job. There are these bumps on the inner liner that really don't need to be there, causing the same effect to your penis. I tried to return the product unused. The package had to be opened to see the product, but the inner package lining was still intact. The company refused to return the product for every excuse they could possibly come up with. So beware, once you purchase, that produce is yours, no refunds whatsoever, replacements only and then you will be interrogate. I suggest you find another company that will work with you better.