Need a Powershell script to provide details for file folders

Hi
Have the following command (listed below) - which can be run to give a size of a specific folder (i.e S:\Test\Results\New11")

COMMAND USED:
"{0:N2} GB" -f ((gci –force S:\Test\Results\New11 –Recurse -ErrorAction SilentlyContinue| measure Length -s).sum / 1Gb)

Need a command or script or function which can be used to run like a wildcard giving either individual details of a summarised size of a set of folders

I.E - Have a set of folders under S:\Test\Results\New11
e.TESTFOLDER_01
e.TESTFOLDER_02
e.TESTFOLDER_03
e.TESTFOLDER_04

Need the script or command to be run once but will match and summarise all the sub folders to give a combined size

i.e file_size s:\Test\Results|New11\TESTFOLDER_?? or TESTFOLDER*

If this is possible that is

Please if anyone thinks they can help please let me know

Many Thanks
Ralph