You could almost call this an "all-round" type of mouse. Children, or adults with smaller hands, might find that this mouse works well for them.
From OnBuy
R-go Tools He Mouse Right Medium Wireless
Ecprof
RGOHEWL - R-Go HE Mouse- Ergonomic mouse- Medium (Hand Size 165-185mm)
This product is also available at 3 unverified stores.