diff --git a/lib/Slic3r/GUI.pm b/lib/Slic3r/GUI.pm
index 9d66ea96..20a99304 100644
--- a/lib/Slic3r/GUI.pm
+++ b/lib/Slic3r/GUI.pm
@@ -7,6 +7,7 @@ use FindBin;
 use Slic3r::GUI::AboutDialog;
 use Slic3r::GUI::ConfigWizard;
 use Slic3r::GUI::Plater;
+use Slic3r::GUI::Plater::ObjectPartsPanel;
 use Slic3r::GUI::Plater::ObjectPreviewDialog;
 use Slic3r::GUI::Plater::ObjectSettingsDialog;
 use Slic3r::GUI::Preferences;
diff --git a/lib/Slic3r/GUI/Plater/ObjectPartsPanel.pm b/lib/Slic3r/GUI/Plater/ObjectPartsPanel.pm
new file mode 100644
index 00000000..1f71da7f
--- /dev/null
+++ b/lib/Slic3r/GUI/Plater/ObjectPartsPanel.pm
@@ -0,0 +1,61 @@
+package Slic3r::GUI::Plater::ObjectPartsPanel;
+use strict;
+use warnings;
+use utf8;
+
+use Wx qw(:misc :sizer :treectrl wxTAB_TRAVERSAL wxSUNKEN_BORDER wxBITMAP_TYPE_PNG);
+use Wx::Event qw(EVT_BUTTON EVT_TREE_ITEM_COLLAPSING);
+use base 'Wx::Panel';
+
+use constant ICON_MATERIAL      => 0;
+use constant ICON_SOLIDMESH     => 1;
+use constant ICON_MODIFIERMESH  => 2;
+
+sub new {
+    my $class = shift;
+    my ($parent, %params) = @_;
+    my $self = $class->SUPER::new($parent, -1, wxDefaultPosition, wxDefaultSize, wxTAB_TRAVERSAL);
+    
+    my $object = $self->{model_object} = $params{model_object};
+    
+    $self->{sizer} = Wx::BoxSizer->new(wxVERTICAL);
+    
+    # create TreeCtrl
+    my $tree = $self->{tree} = Wx::TreeCtrl->new($self, -1, wxDefaultPosition, [-1, 200], 
+        wxTR_NO_BUTTONS | wxSUNKEN_BORDER | wxTR_HAS_VARIABLE_ROW_HEIGHT | wxTR_HIDE_ROOT
+        | wxTR_MULTIPLE | wxTR_NO_BUTTONS);
+    {
+        $self->{tree_icons} = Wx::ImageList->new(16, 16, 1);
+        $tree->AssignImageList($self->{tree_icons});
+        $self->{tree_icons}->Add(Wx::Bitmap->new("$Slic3r::var/tag_blue.png", wxBITMAP_TYPE_PNG));
+        $self->{tree_icons}->Add(Wx::Bitmap->new("$Slic3r::var/package.png", wxBITMAP_TYPE_PNG));
+        $self->{tree_icons}->Add(Wx::Bitmap->new("$Slic3r::var/package_green.png", wxBITMAP_TYPE_PNG));
+        
+        my $rootId = $tree->AddRoot("");
+        my %nodes = ();  # material_id => nodeId
+        foreach my $volume (@{$object->volumes}) {
+            my $material_id = $volume->material_id;
+            $material_id //= '_';
+            
+            if (!exists $nodes{$material_id}) {
+                $nodes{$material_id} = $tree->AppendItem($rootId, $object->model->get_material_name($material_id), ICON_MATERIAL);
+            }
+            my $name = $volume->modifier ? 'Modifier mesh' : 'Solid mesh';
+            my $icon = $volume->modifier ? ICON_MODIFIERMESH : ICON_SOLIDMESH;
+            $tree->AppendItem($nodes{$material_id}, $name, $icon);
+        }
+        $tree->ExpandAll;
+    }
+    EVT_TREE_ITEM_COLLAPSING($self, $tree, sub {
+        my ($self, $event) = @_;
+        $event->Veto;
+    });
+    
+    $self->{sizer}->Add($tree, 0, wxEXPAND | wxALL, 10);
+    
+    $self->SetSizer($self->{sizer});
+    $self->{sizer}->SetSizeHints($self);
+    return $self;
+}
+
+1;
diff --git a/lib/Slic3r/GUI/Plater/ObjectSettingsDialog.pm b/lib/Slic3r/GUI/Plater/ObjectSettingsDialog.pm
index b2f5c3ce..9422ab54 100644
--- a/lib/Slic3r/GUI/Plater/ObjectSettingsDialog.pm
+++ b/lib/Slic3r/GUI/Plater/ObjectSettingsDialog.pm
@@ -16,6 +16,7 @@ sub new {
     $self->{tabpanel} = Wx::Notebook->new($self, -1, wxDefaultPosition, wxDefaultSize, wxNB_TOP | wxTAB_TRAVERSAL);
     $self->{tabpanel}->AddPage($self->{settings} = Slic3r::GUI::Plater::ObjectDialog::SettingsTab->new($self->{tabpanel}), "Settings");
     $self->{tabpanel}->AddPage($self->{layers} = Slic3r::GUI::Plater::ObjectDialog::LayersTab->new($self->{tabpanel}), "Layers");
+    $self->{tabpanel}->AddPage($self->{parts} = Slic3r::GUI::Plater::ObjectPartsPanel->new($self->{tabpanel}, model_object => $params{model_object}), "Parts");
     $self->{tabpanel}->AddPage($self->{materials} = Slic3r::GUI::Plater::ObjectDialog::MaterialsTab->new($self->{tabpanel}), "Materials");
     
     my $buttons = $self->CreateStdDialogButtonSizer(wxOK);
diff --git a/var/package_green.png b/var/package_green.png
new file mode 100755
index 00000000..25b28bb6
Binary files /dev/null and b/var/package_green.png differ
diff --git a/var/tag_blue.png b/var/tag_blue.png
new file mode 100755
index 00000000..9757fc6e
Binary files /dev/null and b/var/tag_blue.png differ