If you want full freedom of movement, you should opt for a wireless mouse such as this one. The format of this mouse is such that it suits those with smaller hands.
From Amazon
Logilink ID0191 Ergonomic Dual Mode Mouse (Wireless 2.4 GHz / Bluetooth 4.2) with 1200 dpi for Computer, Tablet, Laptop, Smart TV, Black
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logilink mouse bluetooth optical 1200 dpi id0191 - eet01