The attachment toggle isn't very secure
599224
I did love this stylus, it helped a lot with phone and tablet, and made up for my somewhat random fingers....but the little plastic plug to hold it into the headphone socket wasn't as secure as I had hoped and somewhere between London and Washington DC there is a lost Capacitive Stylus Pen.. hope whoever finds it gives it a good home.
4488394
I bought two of these 3 months ago for my two 40-lb basset pups, and while they retract easily, sometimes the locking button gets stuck on, or isn't locked on well enough and when I think I have them under control, they can pop loose on me.  Not a good thing in traffic.  It takes practice to get good at the buttons.  One of them is now broken, and won't retract.  I went to the pet store and bought another brand for twice the price, and find it works so much easier and consistently, that it's worth the extra money.  When the second one breaks, I will look for a better one.
4116675
Concept is great, and it worked great for my small puppy in the beginning, however he quickly learned that he could pull the bottom loose from the Velcro tabs and nose his way underneath the pen.  I was quite surprised to have him greet me at the door when I returned home.  Now of course I cant trust that it will keep him secure and safe.
1680299
This adapter works fine except that the lock tab is way too loose compared to other SD cards and adapters that I own. It is easily moved from 'off' to 'locked' when inserting into a camera or laptop card slot. Result is that the camera/laptop cannot write or erase files on the card. I have to stick the lock tab in place with a piece of tape. I suppose it could be glued into the 'off' position or broken off, but I like to use the lock tab whenever I've filled a card to protect it from accidental deletion and also visually indicate that it is full and needs to be downloaded! I ordered two and they both have the same issue, and in several different cameras & card readers.
4940202
It has lifted off my iPhone several times and I have to keep securing it.
1455089
You have to open to adjust the on/off switch.  Falls out of holder when mounted .
2477600
Overall possible to use except it's hard to attach. I use additional Velcro to keep it in place.
Could be much simpler attachment and more effective
1513990
Once attached to crossmember creates a slight vibration but really buckles down handling
4650051
The magnetic clip combination works very well and is a very nice addition. Unfortunately; the piece that attaches to the top half of the phone cover is easily moved around on the cover. This can be annoying when you pull out your phone and the top clip is in a different place. Its better than having the case freely open and close though so I have given it three stars.
3760775
The magnets tend to break off, or they detach from the clip. Little annoying. I need to find a better adhesive to prevent this from happening. Otherwise, they are inexpensive and easily replaced and very useful.
2040638
The plastic clip is not tight enough to stay secure in my shirt pocket.
3758974
This knee brace works when it stays put, but it's held by a short-ish velco tab that doesn't hold effectively nor reliably. I'm using the right size strap, the velco tab is just too small to hold under the direct tension it gets. If Mueller had added more velco, or even better, used a buckle loop that the velco end slips thru then turns back on itself (like other brands), it would hold more reliably.

I'll be trying one of the "buckle loop" styles for a more secure hold.
2949246
The attachment is loose so the go pro is secure but flops around because the system is not fight enough for the go pro mount.
2344241
The metal box is well-constructed, and I like that I can change and set the combination easily.  I do not like the very-thin, vacuum-formed liner that looks like it could be easily smashed, cracked, or otherwise crushed.  I also did not like that the tether cable could not be permanently attached (as designed).  My intended use was to be a safe place to stash extra cash for making change in a vendor booth at a festival, but the loose tether falls out too easily when the box is open, making it very challenging and unsafe to try and open the box, make change, keep an eye on your surroundings, AND keep the tether in place when closing the box back.  I will probably try to hack the box so that the tether is permanent.
4671915
the locking mechanism works well being held in my hand but I can't attach it to the flap/cover because there is no attachment clip ring to secure the mechanism to the flap. The product is incomplete for installation.
4648541
I did not like the 2 pins of attachment. A previous one I  purchased earlier had only one and it has held up well.
47681
I have owned this roof carrier for about 4 years. Difficult to assemble without a lot of strength, but very practical when done. Easy and secure attachment. We use it on a VW Golf and an Audi for longer trips with our dog. Quite amazing how much can be packed in when organized well.
The main problem now relates to the removable flexible brace in the top rear of the carrier, designed to keep the folding sides of the carrier upright.  This has now pushed through the nylon pocket it slots into and then out through the side of the carrier. Poor quality finishing in areas that are difficult to see. This will be trying to achieve a good repair. It would be too bad to have to throw the carrier in the trash because of this small fault. The carrier is not waterproof. My impression is that rain comes up through the attachment holes in the bottom.