I found these cups very difficult to hold and poorly ...
350086
I found these cups very difficult to hold and poorly insulated so that it is very hot on your fingers when filled with a hot beverage
3585919
Purchased this size thinking that my husband, or anyone having difficulty gripping a cup, would have it easy. You can see that there's 'crimps or creases' in the cup but it wasn't enough for a secure hold. Need to look for other similar size cups for a better grasp.
2217153
I bought the New Wave coffee mugs/ cups and saucers including this Latte Macchiato cups to look great in a set however the handle would slip off easily. The thought of the design of being able to take the handle off is good because you can wash the cup in the dish washer but at the same time, the cup would not be able to hold the handle securely.  Although you probably would not be holding the cup itself since there's a metal handle but knowing that it would actually slip off by itself. Not too appreciated. So I had to returned it at the end... :(
522281
These look cool, but the odd shape and the completely smooth surface of these chopsticks make it really hard to use these.  I found them constantly slipping out of my hand when I would try to eat with them.  They try to combat this by giving the thick upper part you grip a slightly oblong shape, but it doesn't really help at all.
3091357
This was one of the most painful experiences of my life. Putting the Diva Cup in was difficult but I finally got it situated and it felt okay. I wore it for awhile and it became mildly uncomfortable as gravity did its job, so I had to go to the bathroom every few hours to adjust.  Then.  I attempted to remove the cup.  It was an ordeal that lasted probably about 20 minutes.  I was in excruciating pain the entire time.  This was one of the dumbest purchases of my life.  However, it was so freakin expensive that I will be saving the Diva Cup to use just in case I ever do give vaginal birth and then my vagina will be nice and stretched out and ready for using the Diva Cup.
1307992
I am not impressed with these glasses. They are very thin and lightweight, and don't feel like they will last at all. They are hand wash only, not sturdy enough for the dishwasher.  According to the packaging, they should be considered a "disposable" cup. I wish I had researched them further, because it is definitely not what I had in mind.

They are a good size, and I like the thumb spot, but they need to be heavier and more solid.
3462192
They are a bit flimsy in holding liquid, and re-squishing them back into the condensed state takes longer than expected. Bought these for overnight guests to use as water cups in the bathroom, but they didn't like them.
1234060
The cups do not fit well on the bottom row and it's pretty hard to put any oversized mugs on it.

You can not put them on the bottom row using the handle as they showed in their pictures at all.

But all in all we made it work and it's saving some room in my cabinets!
1157924
It is extremely hard to get the folds right. It took me four scoopers to get it right. I don't know why they don't make a dispos-a-scoop for small dogs. Since I have them I will use them, but I will not buy them again. It's too much trouble to bother returning them.
3707004
I used to have these cups and got them from the same company years ago. I loved them and just wanted to replace the broken ones. The company changed the product without notifying. The cups used to be very thin with a delicate handle,  As for now the cups and the saucers made of a very heavy thick glass and unpleasant to touch with lips. Very disappointed, will look for replacement offered by another company.
2455510
Hard time holding them.  Wanted to like it, but couldn't.....
1428931
They are tough to get onto my bar no matter how hard I squeeze them. They also are not stainless steel as mine started to rust very fast.
838428
The lids on the cups don't snap closed easily.  They feel tight when dropping them into the Keurig and one of the cups mesh side was defective with a gap that would allow coffee grounds to spill out. not happy with this purchase.
4078372
The fit was to small and the cups were hard a I feel completely miss shaped.
2524061
Not even so it would be difficult to hold a drink level.  Sent them back.  Love the concept since I am a teacher.
1833780
The spoons are not very easy to use expesialy when working with liquids. I will be looking for something different. The cups on the other hand are great.
880771
I bought these to use as a reusable water cup. I keep it on top of the refrigerator, so I need a cup that does not break. These do not work well for that purpose. The opening is too small to comfortably drink from. The other edge hits my nose. They are too mushy, so that I cannot press these against my water dispenser and fill the cup. I have to depress the dispenser with my hand.

I have regular wine glasses in this style that work great, but they have a wider opening. These silicone ones are not equivalent.

The risk of spilling the content is high, since you can easily squeeze the sides and have the water fly out.

These seem harder to keep clean because the sides are a bit clingy. If you swirl a powder mix in the water the powder clings to the silicone sides more so than in a glass cup.