Almost a required accessory!
932167
Looks and works good. It's really almost required, since this case makes the power/sleep button slightly recessed. Without it, it is too easy to activate that button accidentally. I do wish it gave a little better corner protection, so I'm only giving it four stars.
26963
Thank you, KNEKT, for making something so awesome, but please, get a clue about usability and "optional" accessories... This turns your go pro into the [much less costly] equivalent of a SLR housing for taking half-in/half-out photos that are so cool.

however, not including the cover for this is not cool - it's essential. Also, there are internal reflections of the go pro - very slight and depending on angle, but something that should be addressed with a hood that is INCLUDED.

this thing is the secret to cost-effective amazing photos in the water
4420521
I think this is an almost necessary buy if you plan to be out and about with your WD Passport drive.  The silicone case is a good thickness to protect against the bumps and bruises of being mobile with the drive.  It does all of this while still providing easy access to Mini USB plug on the drive.  My only misgivings about this would be the advertised cord holder isn't really as useful as advertised.  I don't have a particularly long cord but it seems to almost always come out the side holder.  At this point I've just been wrapping the cord around the drive instead of trying to rely on the holder.  The larger unprotected top surface of the drive is unavoidable with the way the case is built.  This whole top side of the drive is unprotected but it is recessed so in every day usage it shouldn't contact any flat surfaces before the case does.  "Should" being the key word as it still could.

Overall its a good product for protection, it covers all the edges with a solid layer of impact absorbing silicone.  It does leave some of the drive unprotected but it should only result in cosmetic blemishes from exposure.  And as mentioned the cord holder is rather useless for longer than a 1 meter cord, if that.
2643386
Invaluable accessory -- especially useful as the Galaxy S6 does not have an SD card slot (HUGH frown) -- poor Samsung phone design, but with this, at least I can load music onto the internal memory !
3166078
This has saved my ASUS N53SV-XV1 15.6-Inch Versatile Entertainment POS Laptop more times than I can count.

Essential accessory for it.  It has absorbed such blows that it's now bent inward a little, to less than 90 degrees, but it still functions flawlessly.  Breaks free when I yank the cord by mistake and reduces the amount of leverage applied to the socket by half.
143768
Bought this almost a year ago for use with my Canon t4i. This is the best accessory I have! It has allowed me to keep my camera immediately on hand for hours. It's secure, so if I'm not actively taking shots, I just let it dangle from my wrist to keep my hand from getting tired. I had it strapped on one time for nearly 10 hours while on a walking vacation in Yosemite with no fatigue. One tip I have is to set the strap slightly loose so you can reach the buttons easier, since it can restrict your thumb usage if it's set snug. My only problem with it is that the bottom mount blocks the battery door, so it must be loosened and turned slightly to change batteries. It's not a huge deal since I've even been able to change batteries with it still on my wrist!
3586483
A nice accessory for the WD My Passport Ultra 1TB!, Adds a little bling to it plus offers some protection for it and keeps it from sliding around as much on your table or wherever!, the color matched USB cable is also nice!

But just a note, if your planning on using this on your Passport and thinking about buying the Western Digital My Passport Carrying Case - Black, DON'T DO IT!, as it will be a super tight fit as just the passport itself is, but if you use this Grip Pack it even makes it a tighter fit and you can barley close the zipper and no cord will fit in it either then, and if you try to use it don't expect the cases zipper to last to long!...look for a larger case!
4480321
Quite honestly I think this item is a necessity and is required for the Dragonfly DAC. Just to ensure no damage is caused to the 2.5mm headphone jack. It is because of this I believe this item should be included with the Dragonfly. Outside of the that I a very happy with this extender. My only other quibble is purely ascetic related and has to due with the plastic on the female end of the DragonTail not extending to cover all of the metal on the connector form the Dragonfly as you can see in my picture. Outside of those two small remarks it's got the typical robust high end build quality you would expect from anything put out by AudioQuest.
4825878
I have to say that this is a pretty good accessory to have.  The only con that I have ran accross is that it does not work from directly behind the camera, but that's solved by using it from the side.  Hope this helps!!
3655848
I didn't think I would need this, but littler did I know it was going to be my favorite accessory. So much fun to use!
1472681
If you've got a Wave, Charge, or Surge then this item is, in my opinion, a necessity. This was purchased to replace the one that I had for quite some time before it unfortunately broke (very hard use). Added to my Surge, carried in my right pocket with the Bit Kit and Bit Extender in my left, there isn't much that I can't take care of in a pinch. The only problem I have is that I ordered this thinking it was the black oxide version, unfortunately it's the stainless, but it's not really a big problem.
441622
I'm lost when I don't have this on my camera. I love the extra stability it gives me when I'm shooting, and the extra battery life is nice, too.

I've taken it off a couple times, but always regretted it.
2376954
I've purchased one of these and am already considering purchasing another.  I was at first hesitant due to the price, but once received and implemented that hesitation was out the window.  Having an additional cradle available that you can leave mount to say your bike helmet then frees up any additional cradles for other camera locations, allowing for rapid change over without having to mess with thumbscrews or realignment every time a change is made.  This way I don't have to readjust and re-aim the camera every time I decide I want to take the camera on a helmeted bike ride instead of using my wrist or dash mount ,etc.  Great accessory.
79911
Handy little device to have, especially when you're fat-fingered like me! <LOL>
450858
so convenient to attach to my badge.  There it is!
3489589
This is one of those add-ons that make you wonder how you managed without it.  First and foremost, it adds *significant* coverage for landscape or group shots (and when isn't covering the scene important, anyway?) and still leaves a generous zoom of 8.4x.  This isn't even a trade-off in my book.  Another non-issue (for me) is the fact that it blocks the on-board light, which makes the scene look terrible (casts a harsh blue fringe) & should only be used in emergencies.  Plenty of manual controls abound for control of low-light scenes, but that's for another review...

As a somewhat superficial "plus," it looks fantastic on the HF100.  The lens is also substantial and completely integrates with the solid feel (and look) of the HF100.  It does change the weight distribution of the camera to a noticeable extent, almost shifting it into a mid-size unit in terms of grip, feel and storage (for which Canon supplies a nicely done soft pouch that ties at the top).

The only potential negative is that it blocks the flash (unless you find the pronounced shadow/arc useful for artsy shots!) but I haven't yet found many shots that couldn't be dealt with using less extreme measures.  This is a great purchase!
2110968
If you use a monopod with your telephoto, this accessory is a must for two reasons:  first, it will allow you to change your camera orientation instantly from "landscape" to "portrait" and vice versa without having to disconnect your camera from your monopod; and second, it better balances the weight of the camera and telephoto by moving the attachment point from the camera body to the telephoto lens itself.  As a bonus, now that the point of attachment is in the lens rather than the camera body, it gives you a couple of inches more in your monopod height.

If you buy this item, you can find it in eBay for $16 or less.  I don't understand why this is worth over $100 here.  It is just a metal bracket in the shape of a ring that goes around your telephoto lens.  The ring itself is lightweight (4.24 oz), and of solid construction. The inside is covered with some velour-type material to reduce friction and scratching.  It is not like it made with space-age materials or requires precise machining like lens-polishing.