What makes it useful
A right-handed upright shape aimed at medium-to-large hands. Check button reach and packed height; the shape does not guarantee comfort or pain relief.
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Logitech describes a 57-degree upright shape intended to support a handshake-style grip. The practical question is whether you can reach the buttons naturally without changing the rest of your desk posture.
The manufacturer datasheet lists a right-handed body, 135 g weight and dimensions of 120 × 79 × 78.5 mm. That height deserves attention if your mouse normally travels in a shallow laptop compartment. Measure the pocket rather than relying on a photograph.
Try the shape where possible. A relaxed grip, desk height and arm position all matter to the experience, and this review cannot establish them remotely. The word “ergonomic” should not replace a personal fit check. No pain-reduction result is claimed here.

