... this mostly for the extra height because I feel like I'm sitting too low at work
590564
I ordered this mostly for the extra height because I feel like I'm sitting too low at work.  It's a firm cushion and comfortable. Does not loose much depth when sitting on the cushion.
3244058
My new washing machine is just a bit too deep for me to reach the bottom of, because I'm short, so I needed something to give me just a little bit of a boost.  Regular step stools were too tall, and made me feel like I was going to tumble in to the machine.  I bought this one because it was only 4 inches high.  It has worked out wonderfully.  It gives me just enough extra height to reach the bottom of the washer.  It is also very sturdy.  I never feel like I'm going to fall off of it, and the noon-slip tape works great.  It's wide enough for my whole foot to fit on, too.  If you need something to give you just a little boost, I would definitely recommend this product.
3699313
Shoulders feel restricted due to shoulder straps being very stiff and can be uncomfortable at times
685198
I like this, but still am having trouble staying comfortable.  I don't like the sides being slightly curved up. I feel like the cushion is too short, as in it need so come out longer to the back of my knees/edge of the chair. Im 5'4", it's not like I am way tall.  Making sure I use a foot stool helps though. I noticed one day after several hours,  that it was on the chair backwards (opening in front) but that particular day I realized my sciatica was minimal.  Kinda weird, but I will try it again next week the right way and backwards and see how I feel. So this is not perfect, I may eventually try something different, I didn't want to go to expensive first. But yes, it surely makes a difference compare to using a regular kitchen chair cushion. If I continually have less sciatica pain I will update. It's only been a couple weeks so far.

Update: It is now two months since the last review. I upgraded to 4 stars. 4 only because for me it is actually a little too thick. But as long as I pay attention to how I am sitting, my sciatica pain is less. This isn't perfect but definitley makes a difference. Worth the purchase.

Update: I've had the cushion for almost a year! It is still in perfect shape. So despite me previous thoughts, I need the three inches because my office chair is stuck low! I wish it was an inch or two longer (back to front. If I don't have my feet on my foot stool, then the edge digs into the back of my thighs. Seems like almost every cushion I've read about is too short, kind of annoying. Anyway, keeping the U in the back as it is supposed to be, and being aware of when I sit slack and re adjust, this cushion is helping Id say about 75%. 4 stars still. When I have the extra money to spend I am going to try the Wondergel support seat cushion.
1661915
I hate the idea of sitting on my rump at the computer, but since my job requires it for several hours per day, I picked up this little beauty to keep under the desk so I can pedal while working. The grips on the feet do not work so well on tile or hardwood floors and DO slide, but a couple minor modifications made to the feet prevent this. (aka I used a caulking gun to apply silicone around the feet, let it dry and that prevents it from sliding).
3599199
I'm short so sitting at my desk at work I can never seem to find a good height for my office chair to be comfortable. This has been great for me.
1453731
I wish it had longer feet sits low to the ground
2342477
It is a bit unwieldy to carry, but I have a job where I need to sit on the floor frequently and get up and down so this is perfect.  The arms give me some leverage and its comfy to sit in.  Also love the color.
4358983
I have a very bad back and every time I get off my chair at the office my lower back hurts standing up and I have to walk a few feet to unstiffen. Not with this. I stand right up and feel years younger in my lower back. Not afraid of getting up and down anymore.
4285463
My complaint is the desk level vs seat  was perfect before I put the seat extender on because I am taller.  Since I put the extender on the desk seems too low.  There should be way of adjusting the desk height if you adjust the height of seat.
4625935
So, I'm a big guy, not tall-big, but more fluffy-big.  I don't sit all day at work, but when I do it can sometimes be for a couple of hours at a time to do stuff.  I've got a nice office chair...ergonomic supports and whatnot, but very little seat padding, so I was in the market for a cushion.  I've really wanted a Purple Bed (#3 if anyone is feeling charitable) after lying on it and falling asleep (whoops) at the Mattress Firm, so I though that could be a good match since I am not in a position to make a car payment for a bed.  I started cheap and ordered the "simply" cushion.  Well it simply did nothing for my big behind.  It felt nice to my coworker, who is about 130 pounds soaking wet, but alas one size does not fit all, even in chair cushions.  So I returned it and upgraded to the "royal" pillow.  Have you ever seen any fat royal people (at least recently)?  Exactly, so this cushion was obviously made for those of the average bum persuasion, as it didn't collapse completely under me, but enough that I felt as though I was on a beach towel on a stoney beach...  not pleasant.  Again, another more average sized coworker, loved it and said it was the most comfortable thing ever...  Whatever loser.  So I decided to return it and give Purple one more chance and ponied up the cashiola for the ULTIMATE SEAT CUSHION!!!!  It's like a wrestler, only soft and you sit on it.  So I just got it today, and I feel like friggin Goldilocks finally finding the bed that was just right.  It's big and heavy, just like me, and it was ready for this jelly.  I feel like I am sitting on a cloud, but one that happens to be in my office instead of the sky.  My chair is on wheels and I actually scooted across my office to get something off of a shelf because I was comfortable... NOT lazy, comfortable.  So to all of my bottom-heavy, or just heavy-heavy compadres out there,  this is for us!  We have been heard!  #fatbuttsmatter
4550282
The taste is not the best but I like feeling like I'm getting more caffeine. I drink this not so much for taste but for when I feel a little tired at work.
1030038
Too high, too cramped, difficult to get one to, I felt like I was going to fall over.
770427
Too short - I'm only 5'11 and this makes me feel like I'm wearing a belly shirt ( 215 pounds, a lot of weight is in my legs )
3588114
I do enjoy the foot rest, but i find that with my particular desk being an L shape the brackets will move back and forth on me, causing the need for re-adjustment often.
477404
I suffer with back and hip pain and this cushion has made it so much better to sit at work
4882085
It didn't feel right in my recliner, but does help at work.  I have noticed the difference in my sciatic and standing up and muscles not locking up as quick. It is large, so its not like you want to carry it around.