Packaging
The Corsair M55 RGB Pro comes in a familiar box—with its black and yellow colors, some render images, specifications, and marketing text, it features the same design as those of many other mice I've reviewed from the manufacturer lately. The contents are the M55 mouse, a warranty guide, disposal guide, and quick-start guide. There are no replacement mouse feet or any other handy goodies, unfortunately.
Shape
At first glance, I thought this was basically an ambidextrous
Harpoon, but after a thorough examination, I realized that is not the case at all. The M55 is bigger and just generally has a safer, much more versatile shape. It's fully symmetrical, featuring side buttons on both sides of the mouse, meaning lefties might enjoy this one just as much as right-handed users.
The overall shell design is pretty simple, but effective. Its sides have some nice concave grooves that help with maintaining a stable grip, especially while you pick up the mouse. The rear flares out a bit, creating more room for your palms to sit on. As for the front, the main buttons have some minor comfort grooves for your fingers to settle into a relaxed position.
The mouse is about 124.4 (4.9") long, which can be considered average for gaming mice, though it leans slightly towards the long side. Its total width is 57.25 mm (2.25"), but the width at which it is gripped is less at about 50 mm (1.97"). The total height is 40 mm (1.57"), and the hump is more towards the back. With these dimensions and such a shape, I would say it can suit every grip style, but I'd mainly recommend it for claw and palm grippers with hands between 16–19 centimeters. Of course, as always, these are just basic guidelines and should not be taken for granted. It's best to try a mouse before buying it.
Here are a few extra pictures of the mouse:
Comparisons
Here are some shape/size comparisons with other mice:
Logitech G305
ROCCAT Kova AIMO
SteelSeries Rival 110
Zowie ZA12