Shape

No changes have been made to the shape of the UltralightX compared to the Starlight Medium. Neither the front nor back flare out much, but the front is slightly wider at the top than at the bottom, whereas it is the other way around at the back. As a result, the sides do curve in, but essentially are straight at the middle. The main buttons feature rather deep comfort grooves, along with fairly shallow engravings, and they also are the only area not covered by hexagonal holes. Overall, a neutral and agreeable design.


As for grip styles, I'd say the UltralightX generally suits all three main grip styles: palm, claw, and fingertip grip. It is a medium-sized mouse with a barely pronounced hump, which should make it generally suit most hand sizes. For reference, my hands are 19 cm long and 10 cm wide, and I found the UltralightX very comfortable in claw grip.

Dimensions

This table includes the dimensions of the Finalmouse UltralightX and several other 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:


Glorious Model O 2 Pro 4K/8Khz Edition


Razer Viper V3 Hyperspeed


LAMZU Atlantis 4K


Pulsar X2


Logitech G Pro X Superlight 2