Penguin Ambidextrous Wired Ergonomic Mouse USB, Alleviates RSI, Easy-Glide, Vertical Design, PC Computer & Apple Mac Compatible (Black/Silver, Size: Large)

Best ergonomic mouse I've used. I should note that I'm not schooled on ergonomic research, but it's clear to tell how comfortable this completely vertical mouse is compared to a regular computer mouse. It's even noticeably more comfortable than other ergonomic mice that place your hand at a 45 degree angle. With this mouse, most motion comes from your elbow, and you'll notice the reduced strain on your hand.The build quality is pretty good, and it looks modern and interesting compared to most other computer mice. You'll probably have people asking about it. It's especially great because there are no glossy surfaces to show off your gross fingerprints (why do so many mouse manufacturers put glossy surfaces onto things designed to be touched by human hands???). I will say, though, that the Posturite logo on the back with the spine looks kind of creepy and detracts from the cuteness of the penguin design. It's like "oh wow look at the cute penguin aaaand it's got a deathly boney spine of death tattooed on its back".The hand rest area is a great bonus as it prevents you from having to use muscle to hover your hand over the mousepad--your hand moves effortlessly with the mouse. The shape is very well catered to one's hand, and the availability of three sizes means it can be an even better fit. It is very comfortable to grip. The ambidextrous design is also welcome. The scroll wheel works great, but I will say that the left and right click buttons take more strength to use than most other mice. This is probably due to their large size--the ambidextrous design means the buttons are big enough to be clicked from either side. They probably should have split it into four separate buttons (with two for left click and two for right click) so that each individual button is easier to click.The mouse is perfectly sensitive and works well on most surfaces--it seems to use invisible laser technology, which is usually more accurate than LED-based optical mice. The wired version is very smooth to use, although I can't speak for the wireless version. I've used it with Windows and Linux.Another thing that is conspicuously missing is some programmable macro buttons. But you can't have your cake and eat it too.Overall, I'd say, don't waste your money on the proliferation of $20, slightly vertical ergonomic mice. Spend the extra buck and get something better, like this. You'll save on carpel tunnel surgery down the road.

I like that my hand can rest on the mouse itself instead of sliding around on the mousepad.I like the RIGHT click button (the bottom)Here's the bad. The sizing guide is poor. My hand is 8" long, from tip of my middle finger to the measuring point on the guide. I therefore bought a LARGE model. This mouse is quite a bit too big (and i hate small mice). I should have purchased a medium.Overall, the buttons are far too close together for me. I have to scrunch my index, middle, and ring fingers together in order to be able to use the buttons and the scroll wheel. Naturally, my ring finger rests wholly underneath the right mouse button (bottom).The left click (top button) is very mushy. Wildly different than the right click button.The scroll wheel is OK, the click is nice, but it slows down too quickly for me. after I scroll, it pretty much stops right away, as opposed to something like my logitech mice which continues to scroll even though there are much stronger detents.There are no forward/back buttons! this is a pretty big oversight, honestly. those are used very often, and they are easy to implement even in an ambidextrous mouse (put em right on the top for thumb operation!)I like the direction they went with the base, and i like the idea and build quality for the most part. the only real thing is they were so focused on making it ergonomic that it doesn't actually function well as a mouse. Lacking forward and back buttons is huge, I had thought it was going to be the little bow tie but that's just a fidget for your pinky.Cramming all my fingers together to operate the buttons with 3 fingers instead of 2 is much worse than using my old cheapo vertical mouse.

I was very excited about putting this mouse on my desk to replace my Logitech optical wireless mouse. My research indicated this was a good solution for alleviating the elbow/wrist pain which became more pronounced over the past few months. After the first few days, I immediately noticed a decrease in discomfort in the elbow and wrist. On the 4th day the left-click button started to stick unpredictably and the morning of the 5th day the button sticking rendered the mouse nearly useless. My attempts to re-position my finger on the mouse button occasionally yielded better results, however the sticking continues. I returned the mouse and purchased the Logitech M570 trackball.

I purchased this because of the angled mouse eventually hurting my thumb because of the angle. While this did solve that problem there are a few issues I ran into.+s1. The 90 degree angle does solve wrist pain and as a left handed mouser it's awesome to be able to switch. It also has great contours on the shaft.2. The platform that serves as a wrist reset is really conformable and really helps to facilitate use of your shoulder to move the mouse rather than your wrist.-s1. The buttons feel mushy and I have had a few false clicks on all 3 buttons. Even the Left/Right switcher is of very low quality and there isn't a confident "click" where you think it would be. Seeing the cost of this thing you'd think they wouldn't cheap out on the buttons and their feel. The scroll wheel is also not great it doesn't scroll as smooth as any other mouse I have. All of the buttons get out performed by any standard mouse you could probably find for free on Facebook market place.2. The recommended size for me is large. While it is conformable, it does seem a bit large for my hands. Maybe a medium or even a small would work a little better.It works decently. The buttons and scroll mouse are pretty bad.