Truly beautiful option for all Mac users, who can customize or change cursor size on Mac OS X. Like Windows, Ubuntu and other desktop OS. Generally old and professional developers set it and keep that big on large Mac Screen (27 inch iMac the new released).
are you willing to customize your mouse pointer size and related settings? then this is the right place to know thinks for all about mouse settings. Generally Folks trying to find this option inside mouse section under the system preferences. But apple didn’t give option there, so follow the below right way on modify your mouse cursor in your Mac’s screen.
Also refer: Best mac game, Must enjoy!
Steps for change cursor size on Mac OS X: EI Capitan, Yosemite and Others
Step 1: Go to the Apple Menu on Mac OS X From top right corner.
Step 2: Then, Click on System Preference. 
Step 4: Next, Choose Accessibility. 
Step 5: From right UI panel, Display.
Step 6: Next cursor size slider, by scaling that left or right side you can see instant change in Mouse pointer size on screen. 
Now you are done, Bookmark this page for future reference.
More help related to Touchpad or Trackpad:
if you are using trackpad, also useful setting related to use it more comfortably right there: Mouse & Trackpad. Mouse Key speed customization (Control over keyboard Number pad), Double click speed (Finger touch with double tap), Spring loading delay. Don’t set double tap for trackpad at maximum level because mostly users are in trouble double tap not working with misconfigured settings.
Useful: Folder looks customization: Set Picture as Folder icon.
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