This particular model is built to be used by left-handed people. Children, or adults with smaller hands, might find that this mouse works well for them.
From Amazon
R-Go HE Mouse - Ergonomic Mouse - Large (Hand Size above 185mm) - Left Handed - Wired
Ecprof
RGOHELELA - R-Go HE Mouse- Ergonomic mouse- Large (Hand Size above 185
This product is also available at 2 unverified stores.