I heard about Tenga Cups series years ago but never decided to buy one until recently. When they (I got a Suction Cup for free) arrived, they weren't quite what I expected. I noticed that the Cup Series was in the "Disposable" section and I didn't understand why. Apparently, they come pre-filled with lubricant, which I did not know. I figured they would arrive like any other fleshlight-style product: dry and I'd have to use my own lube. Apart from that, they are great. Perfect size, and it's nice to flip it around to get completely different sensations. If you're fine with this product having a limited lifespan, do yourself a favor and get one already.