If you're looking for a gaming mouse, this could be just the thing. The format of this mouse is such that it suits those with smaller hands.
From OnBuy
SpeedLink Garrido Illuminated Optical Ergonomic PC Mouse - Black (SL-610006-BK)
Ecprof
SL610006BK - GARRIDO mouse Right-hand USB Type-A Optical 2400 DPI