Shape

Though the dimensions are not an exact match, the shape of the Aria II Pro is, by all intents and purposes, identical to that of the Aria XD7, and therefore, by extension, near-identical to that of the Razer Orochi V2. When compared to the Orochi V2, even subtleties such as how the main buttons are shaped are highly similar. That said, even though the relative dimensions are almost a match, the absolute dimensions aren't, as the Aria II Pro is significantly larger. Much like on the Orochi V2, the left side is concave, whereas the right side is convex, the hump is centered and fairly tall, yet slopes down quite rapidly towards both ends, and the main buttons feature moderately deep comfort grooves. Due to the significant difference in size however, the Aria II Pro handles very differently. Relative to its size, the Orochi V2 is a fairly wide mouse, which applies to an even greater degree to the Aria II Pro. Hence, despite being a medium to small mouse overall, the Aria II Pro lends itself to medium to large hands merely by virtue of its above average width. People with wide yet shorter hands in particular may find the Aria II Pro a particularly good fit.


As for grip styles, I'd say the Aria II Pro mostly suits claw and fingertip grip. It is a medium to small mouse with a pronounced hump and above average width, which should make it generally suit medium-sized and larger hands. For reference, my hands are 19 cm long and 10 cm wide, and I found the Aria II Pro very comfortable in claw grip.

Dimensions

This table includes the dimensions of the Fantech Aria II Pro and several ambidextrous mice. "Front height" denotes the distance between the base and main buttons. Measurements with two decimals have been taken with a caliper, while those with one decimal have been taken with a ruler. For a full list of all measurements taken, please refer to this sheet compiled by an esteemed community member.


Below are some comparison shots with each of the measured mice.


Zaopin Z1


Fantech Aria XD7


Razer Orochi V2


Logitech G305