u/Lekvey_official

For most people, the “sweet spot” for an ergonomic mouse is around 45°–60° of tilt, with many well-regarded designs landing near 57°. That angle keeps your forearm closer to a natural “handshake” posture instead of forcing it flat against the desk.

A quick visual of the idea:
0° = traditional flat mouse → most forearm pronation
45°–60° = moderate vertical tilt → usually the best balance of comfort and control
70°–90° = very vertical → can help some people, but may feel awkward or create different strain