You could almost call this an "all-round" type of mouse. The format of this mouse is such that it suits those with smaller hands.
From Senetic
Mouse Logitech B220 Silent 910-004881 black
BuyKingston
Logitech M220 SILENT mouse Ambidextrous RF Wireless Optical 1000 DPI
Compadvance
LOGITECH B220 Silent In-House/Ems
Clove Technology
Logitech M220 SILENT