Review on 🐧 Posturite Penguin Ambidextrous Wired Ergonomic Mouse - USB, Alleviates RSI, Easy-Glide, Vertical Design - Compatible with PC Computers & Apple Mac (Black/Silver, Large Size) by Sean Maples

If you are left handed or prone to RSI (Repetitive Strain Injury is a form of RSI) this mouse is by far the best I have found. It's very strong, a little bulky (which isn't a problem), and allows you to hold it securely without squeezing too hard. Switching from left to right hand and back is easy, quick, and affordable (sometimes you can accidentally flip a switch, but it's far from fatal). The durability allows me to take it to and from work without damage (I damaged my Evoluent LH by throwing it in my bag twice a day). There's only one problem, and it can't be the mouse's fault. The page tends to bounce up and down making it impossible to place your cursor in the right place. To stop this I turn the mouse off and on again or click on the penguin's beak to fix it). I don't know if it's too close to another bluetooth device or something with DPI or something. It's very annoying, but I tolerate it because there are so many other great features that no other mouse can match. And I've noticed the same thing happening with another vertical mouse I have and it's wired. The second penguin is coming soon so I can stop lugging it around. Excellent supplier. Fast delivery. Good packaging. No problem.