Great concept, but not very durable
590897
My son absolutely loved this product.  However, about a week and a half after receiving it, it broke.  I ended up ordering another one because we had just ordered more filament to use with the pen and my son was really disappointed that it had broke.  Amazon ended up refunding the amount I paid for the first pen after I had to ship it back to them.
4060000
My girlfriend and I loved this product and app.  Loved it used it every day, but a couple months after owning it suddenly went from 7-9 days of battery life.  Then the plastic collar mount seems to have broken, because it fell off her collar.  Honestly after a few weeks it was beaten up.  My dog isn't particularly active, she wasn't rubbing against things, the product is simply not durable enough for a normal 35-40 lb dog.  The mount should be metal, the whole thing should probably be more sturdy.  I actually hope they build a more durable version because I honestly love the product, it may be good if you have a laid back Maltese.
1992298
The idea behind this case is awesome, but it needs to last longer than just a couple of months. In the time my husband has had this case.... the holster has loosened to the point its un-useable, the soft rubber has spilt down a couple of seams, the rubber has stretched out, the belt clip doesn't hold anymore.
2649812
This  brush scraper is a great concept. Extendable, great for reaching the whole vehicle from one side. 90 degree head, great for pushing pulling snow. Wiper blade, great for removing melted ice or dew. And the scraper is pretty effective.
BUT... After one and a half seasons the hinge at the brush head broke rendering this thing useless for anything but ice scraping and holding open doors etc..  Its just not strong enough at that critical spot.  Maybe if you live in light snow area or only get "dry snow" but its no match for heavy lake effect snow.
1001963
I love the concept, and the toy itself is adorable, however, the outer material was destroyed in one day. My dogs can be a bit rough, but even the cheapest toys last more then a day usually. Was a bit disappointed at how quickly it all just came apart. I would love to buy them again, but would need to have the material tough like a tennis ball.
3716528
Great idea and intentions, however not built as sturdy as it looks. We got it as a gift for my daughters big Christmas gift. The box and everything looked fine but when opened one of the planks was off. We are unable to secure it with the pieces that suppose to hold it. Luckily, her father fixed it with small nails and wood glue. The animals that it came with are great! All her other animals also fit in there and stores easily
1731747
This is a cool idea, and it did the job for a little bit, but then it broke when I sat on it as it was in my back pocket and I caught it at the wrong angle. It worked for a while, but it won't hold up forever. However, it's a neat concept, and if it was perfected, it would be great.
955274
This product is based on a good concept, but the product itself isn't perfectly built. After using it for 6 months, some of the plastic string get pressed in and bent from routine usage. The plastic strings slowly fill in the the space, and can't fit any knives in there anymore.
1801754
Love the idea of a scoop in a holder like this one. However, this particular scoop does not seem nearly as durable as others I have seen. Will see how long it holds up.
3775835
This is a great concept for a bottle. It's excellent for travel, due to how it collapses. However, I am concerned about the durability. The bottom of the bag has a sharp fold, and will likely develop spots where there will be repeated stress.

Although the plastic seems to be dual-layer, I recently noticed that one of the layers has worn through at such a spot. I would imagine that the next step is catastrophic failure.
1572054
This is a great product in concept, and it seems to be relatively well made (the bamboo part anyway), but I gave it four stars because I don't fully expect the colored plastic sheets to really last that long.  So far, I have used this thing an average of 3-4 times per week.  It has been a few months since I received it and already the vegetable sheet (the one I probably use the most) is marred, with deep cuts all over.  I will probably end up cutting through it before too long.  Perhaps I can find replacement sheets.  If so, I will happily continue to use it.
1313925
This dog car seat has a good overall design concept.  The harness allows enough give for your pet to move comfortably while seated.  The storage in the base seems logical (but not easy to actually access).  Removable seat pad makes it easy to clean, but not always secure. The snack tray is a great idea, but isn't a really great placement.  I loved that it was a hard surface, and seems to offer security when using the seat belt.

Unfortunately, my car seat was cracked at the base when I bought it.  I realized this when I was trying to secure the seat belt.  My dog seemed to be fine sitting on it when I tested it at the store.  Apparently, if you drop this car seat, it will probably crack after the first drop.  It's probably still usable cracked or broken, but for the price I think the materials could be sturdier.  Thicker plastic, like the kind you find used for children's plastic seats would have been a much better alternative.  I wonder if a child's booster seat might work better?

If you're sure you'll never drop this seat by accident, then maybe it's an okay seat because of it's design.  But the materials are very very poor.
2429573
Great idea, quality not so much.  The concept is great, hide the toys inside the lotus and the dog has to work to pull them out.  The velcro is strong and it takes a little work to get it open.  The fabric and seams though just aren't tough enough to withstand big paws and big mouth pulling it open more than a few times.  My dog is not a destroyer of toys, he isn't an aggressive chewer but in pulling this open he did tear the fabric in 2 places, one along the black edge and the second where the green and purple meet.  Toughen up the fabric, reinforce the seams and it's an absolute 5 star toy.  I read a lot of reviews about dog toys and it still amazes me when folks complain about something not being a suitable chew toy for their dog, this isn't a chew toy, it's not meant to be something for the dog to gnaw away on and if you know your dogs is an aggressive chewer or a destuffer don't give them something like this expecting it to last.  I've invested in several stuffed animal sewing needles and nylon thread to repair tears in my dogs favorite toys to extend their lives.
3876219
It's a pretty neat concept, and rather convenient to have on your keys. It didn't last long though as it eventually broke. Could be good if it utilized better quality materials.
4118407
We love the clock when it functioned, however it did not stand up to my active son, only lasting 6 months. The first function to stop working was the nap timer, then we lost the accurate time keeping. This is a wonderful concept, but needs to be sturdier. I would also like the option to plug it in.
14280
The idea is great. The product itself is a bit flimsy. I doubt it will hold up with much use.
2721851
The first few times I had used this opener it worked like a charm. After a few bottles had been opened the first thing to go was the foil cutter. It fell apart. Then the opener itself started falling apart a couple of weeks ago (only a few months operation). I really like the idea of this item. It made it very easy to open the bottles!! I just wish it had a more durable construction.