CSL-Computer Vertical ergonomic optical USB mouse/vertical model | ergonomic design - prevention against mouse arm/tennis arm (RSI syndrome) - particularly arm-friendly | 5 buttons

This mouse was so good I bought it twice, after the first one went to my second PC. Pros: Very functional in terms of what it's meant to do. Easy to use. Very comfortable, both ergonomically, and the texture of the mouse Sensitive mouse that responds well. Good enough cable length for more situations Very good value for money. Clicks are satisfying and accurate. Looks great Cons The material of the mouse can get sticky if you're not careful and use it with oily hands. So, keep your hands clean and the mouse will feel great. Otherwise it can get sticky and doesn't actually clean very well. This is because of the material. Might have been nice if the side light was LED and could be changed, but sadly it's just blue and cannot be turned off.

I've used a Logitech trackball for years but found recently that my thumb was becoming very painful and decided to try this one. Like others, I wasn't sure it would suit so bought the cheapest version, but I can honestly say I don't see why anyone would need to pay more. The matt surface is very comfortable, the blue strip stylish and the position extremely comfortable. As a transcriber I worried it would slow me down, but it only took a little while to get used to it. I find it plenty sensitive enough for my work, and I only need about six square inches of space for it to zip across two screens. I received a polite and professional email with the invoice attached, and wrote back to ask if they had a left-handed version for my partner. They don't do one, but took the trouble to reply with a link to similar left-handed product on Amazon, which I thought was great customer service. Unfortunately the left-handed product is three times the price, so come on, CSL get some left-handed ones in stock! Update Feb 2020 - I have used this mouse constantly since I bought it, and only now is one of the buttons getting a bit sticky. I was shocked when I looked back to see how long ago I bought it and how well it's performed. It's been totally reliable, very comfortable and the thumb pain disappeared and never came back. I wouldn't think of paying over the odds for other brands when this is so good, so I've just ordered a new one.

I get tendinitis/RSI across the whole back of my hand which causes me to loose flexibility in my wrist and hand for weeks. This meant I couldn't use the hand properly, couldn't lean on it, open doors, hold the steering wheel etc etc. To try and fix this I got this mouse, a padded mousemat, and also a wrist rest for the keyboard to change the position of my hands from 'the claw' position. [...] The combination of the three has worked and my hands are much better. I LOVE this mouse, it's really easy to use, I got used to it straight away. My right hand was much worse than my left, so it wasn't just the typing, I was 'clawing' my hand when I used a normal mouse and especially a trackpad trackpad as well. Everyone should get this mouse, regardless as to whether you have tendinitis or not. It is a much better position for your hand, much more natural, and much more comfortable. Bear in mind it is right handed! I'm sure there is a left handed option but just keep that in mind when you buy one. Functionally, it works really well, very responsive, doesn't feel cheap or anything, is a nice material.

I work in an architectural practice which uses the computer 7 hours a day, 5 days a week. The constant use of CAD and other graphic related software throughout my university and working life might have taken its toll and I have recently developed a strained around my wrist and forearm sometime early this year. I've tried a few ergonomic mice to resolve my problem but to no avail until I found CSL-Computer vertical mouse. It has tremendously relive all strained that I have, thanks to its clever design. In my experience, what sets CSL-Computer vertical mouse apart from other vertical mouse is the smooth/ seamless curvature of the mouse where the joint between your thumb and index finger meets the mouse. I feel, it encourages a natural hand position of holding the mouse as opposed to other vertical mouse that have high thumb support. I.e. your thumb will be positioned high on the mouse, almost in the same alignment of your index finger (in relation to the posture of a vertical mouse). It feels as though you are forced to positioned your thumb at the allocated space and I find that it strains my thumb. CSL-Computer vertical mouse has a seamless design which allow your fingers to sits natural onto the mouse and comfortably 'hugging'/ 'caressing' the mouse. I have a relatively petite hand and this design suits me well. In summary, I'm very happy with this purchase, affordable price, great precision, aesthetically pleasing and highly recommended for RSI sufferers :)

Bought my mouse 4 years ago in desperation. I have arthritis in every joint and also Dupuytrens syndrome (thickening of tendons pulling fingers into palm). The odd shaped mouse I had been using - a confectionary giveaway that suited my hand and arm problems, finally collapsed. Tried every other on offer in local computer shops and none were usable as they were either far too big for my hand - since I am a woman, or just the wrong shape altogether to suit me. Up to then I hadn't fully realised that computer add-ons were designed by men for men and if you look up a mouse for a child, they are still the same size, just in bold playroom - style colours. Faced with that I turned to vertical mice, which back then looked weird. I never looked back after I found this CSL mouse and am buying another today after 4 years, simply because common sense tells me that it can't last forever and I don't want to be without it. I can't buy a vertical mouse in local computer shops as they are still considered odd, but they are not. The vertical mouse - and I am talking about this mouse in particular, is the most sensible bit of design in the last few years in computer terms. The wrist pain endured after every session at my machine vanished, and the hand/arm position is so natural that it makes mouse-work a breeze. Because of the length of the keys for right and left clicking, it doesn't matter if your hand is big or small, so even a child could use it with comfort. If you have discomfort in your wrist, shoulder or fingers, give this upright Mouse a go. Some say the change from regular mouse to vertical takes time for the adjustment, but it didn't for me. It felt so right from the off. I can't sing this mouse's praises highly enough - and that's after 4 years of daily use - which is why I am buying another one now, just in case. I hasten to add, the mouse is still going strong but when the day does eventually come, I want another identical one to replace it.