Adding constant string to string obtained in ForEach loop from hashtable of custom class object doesn't work as expected

I have a Projects class defined as below:

class Projects{
    [string]$Name;
    [string]$FolderName;
    [string]$RemoteRepo;
    }
}

Then I create a hashtable:

$Prj  = @{"A1" = [Projects]@{Name = 'A1'; FolderName = 'B1'; RemoteRepo = 'C1'}}
$Prj += @{"A2" = [Projects]@{Name = 'A2'; FolderName = 'B2'; RemoteRepo = 'C2'}}
$Prj += @{"A3" = [Projects]@{Name = 'A3'; FolderName = 'B3'; RemoteRepo = 'C3'}}
$Prj += @{"A4" = [Projects]@{Name = 'A4'; FolderName = 'B4'; RemoteRepo = 'C4'}} 

Then, for every value in the Prj hashtable, I want to extract the FolderName value, add a constant string let say "www" to it and display it.

To do so I'm doing like that:

ForEach ($p in $Prj)
{
    ($p.Values).FolderName + " www"
}

Instead of expected result:

B1 www
B2 www
B3 www
B4 www

I'm getting this:

B1
B2
B3
B4
 www

My questions:

1. Why?
2. How to do to get the expected result.