Terrible design that won't stay on your teeth
937772
This product is poorly designed. The trays are flimsy such that they generally will not stay in place. The gel is meant to be pushed against your teeth so that the trays and gel will always cover the surface of your teeth, but this mechanism does not work. The gel is not adhesive enough to stay in place. You will often find clumps of it come out the edges, forcing you to either swallow it or risk losing the entire tray when trying to spit the gel out. Perhaps the intensity of the gel would work better than that of competitor's white strips, but since the gel rarely stays on, it's impossible to tell. I will go back to strips and stay away from these trays. It was a true waste of money and I regret having tried what I thought would be more like a professional teeth-whitening kit.
3988921
I don't know what these other reviews are talking about: this case is nigh-impossible to get your cards out of once they are in it, without first taking out your phone. The design puts a rubber lip in front of the cards that wall them off inside the grip. It makes it impossible if you don't have fingernails, like myself, and very difficult if you do. The whole purpose of a wallet phone case is the ease of using your cards, but when its more difficult to pull the cards out than it would be to just carry another wallet, the case fails. A real bummer because the look of the case is really solid. But I will have to return it and look for a case that actually works. I wish Speck made wallet cases for Galaxy s7; their iphone case was amazing.
4343733
This device is terrible! The teeth don't stay in the holder and keep falling out before you can even try it out on the cake! Don't waste your money!
1629420
After almost 3 years of use, this holder has annoying design flaws and I am going to replace it with a different brand/design. Flaw #1: the clips holding the side of the phone is too shallow. It is barely enough to hold a FLAT phone. If the phone has a curve back, it WILL spring out of the holder. It happens very frequently DURING THE DRIVE, the phone slides out of one clip and got ejected randomly in the car. Flaw #2: with time, the holder get loose in the CD slot. Making the holder + phone very sensitive to vibration.
4829273
There are very few items that will prompt me to write a review either positive or negative, but this one needs a strong negative review. While the nursing pillow design is good in concept, the extendable nursing cover is attached to the pillow with a Velcro strip located circumferentially around the edge of the pillow. The side of the Velcro strip is extremely sharp and cuts my skin (draws blood) and would easily cut baby skin. It's hard to avoid not scratching yourself or the babies if you are actually trying to position 2 babies to nurse on your own. I would return this pillow if I could.
3774726
A great idea but mouth piece is not very flexible and I was gagging any time I tried to use it
2522234
Well I am really disappointed in this product. 20 times I have stuck these things on my teeth just as instructed and you can't even tell. My teeth are not in some awful condition, I am not a smoker, nor a coffee drinker, and I also use their whitening toothpaste. I don't expect much from a toothpaste, but these I did.
Even my oldest, who has been away at school and wasn't exposed to any gradual progress, couldn't tell any difference when she came home.
This was a complete waste of my time and money.
2765040
This headset is not designed to be worn by humans!  Very, Very uncomfortable.  The overall design is ridiculous.  The headband is not adjustable and is flat across the top and is way too tight.  The ear pads do not swivel enough be able to self adjust to the pinching of the headband.  There is no clip for the very heavy volume controller,  so the weight of the controller constantly pulls down on headset.  Very bad design.  I can wear these for about 30 seconds before they begin to hurt my ears.  Highly disappointing.
609400
The design is seriouly flawed in that the teeth on the adjustment buckles are square tip plastic and do not hold the two critical positions. They will slip enough that the dog can slip out of the harness as mine did and nearly got ran over by a car. The overall design is good but do not trust the adjustment positions to hold . It is ridiculous for the designer to expect flat plastic teeth of this design to hold a position. What ever you do do not tie your dog out using this designed harness . He will probably not be there when you return. I am going to try and contact the manf.
2212519
If you want saliva spilling out and no chance for a refund, this the the product fot you. Pass on this design folks there are better out there.
1124377
Absolutely terrible design. You can forget about using ice with this bottle because the straw portion WILL NOT stay locked in place and keeps falling off. Honestly, i'd look else where if you want a filtered water bottle.
4325250
It was an awkward mess - smushing gel over my teeth with a piece of flimsy plastic that barely adhered, much less fit securely.  It'd probably be easier without the trays.  I don't know if they work or not.  I gave up.  I want my Crest Whitestrips back.
2315673
Difficult to put on and would not stay attached. Poor design
1519224
Trying to properly form this dental appliance is next to impossible.  Good idea, poor execution.  Ended up getting a proper appliance from my dentist after messing around with this thing in my mouth for several days.  I think it did more harm than good....
448172
Very hard to believe Oral-B would design a toothbrush that is so messy to use.  Maybe with a different brush head, it would not spray the mirror over our sink as I brush.  It's a very badly designed brush. It does a messy number on your eyeglasses too. Instructions even warn you to make sure it is in your mouth before pushing the on button. It is still messy to use when it's in your mouth. Can't send it back, but I can certainly throw it away.  One nice feature: a pause warning to let you know you have brushed for two minutes.  .
4065378
Very hard to use, kept falling off, not worth the money
2571582
I think the Cambak bottles are a flawed design.

I really like the idea about not having too lean the bottle all the way and not have all the water spill on you, but this bottle tends to requires quiet the amount of "suck" to pull the water up the straw. Its downright annoying. Additionally, the straws are hard to put into their holders and half the time they fall over the lip in center area of the bottle so even though they appear to be in, you cannot drink the water as the straw is stuck to the bottom of the bottle.

Additionally, I ordered two and one of them leaks.

No, I would not recommend this product to a friend.