diff --git a/resources/profiles/Prusa.json b/resources/profiles/Prusa.json
index 017630afc7..e019ada90b 100644
--- a/resources/profiles/Prusa.json
+++ b/resources/profiles/Prusa.json
@@ -893,6 +893,10 @@
             "name": "fdm_filament_pa11cf",
             "sub_path": "filament/fdm_filament_pa11cf.json"
         },
+        {
+            "name": "fdm_filament_flex",
+            "sub_path": "filament/fdm_filament_flex.json"
+        },
         {
             "name": "Prusa Generic PLA",
             "sub_path": "filament/Prusa Generic PLA.json"
@@ -997,6 +1001,14 @@
             "name": "Prusa Generic TPU @MINIIS",
             "sub_path": "filament/Prusa Generic TPU @MINIIS.json"
         },
+        {
+            "name": "Prusa Generic FLEX @XL",
+            "sub_path": "filament/Prusa Generic FLEX @XL.json"
+        },
+        {
+            "name": "Prusa Generic FLEX @XL 5T",
+            "sub_path": "filament/Prusa Generic FLEX @XL 5T.json"
+        },
         {
             "name": "Prusa Generic ASA",
             "sub_path": "filament/Prusa Generic ASA.json"
diff --git a/resources/profiles/Prusa/Prusa XL.svg b/resources/profiles/Prusa/Prusa XL.svg
index 4ebe0c97ed..eed839c6a9 100644
--- a/resources/profiles/Prusa/Prusa XL.svg	
+++ b/resources/profiles/Prusa/Prusa XL.svg	
@@ -1,17 +1 @@
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-     id="path4" />
-</svg>
+<svg xmlns="http://www.w3.org/2000/svg" width="360mm" height="360mm" data-name="Layer 1" viewBox="0 0 1020.5 1020.5"><path d="M0 0h1020.5v1020.5H0z" style="fill:none;stroke:#fff;stroke-miterlimit:10;stroke-width:5.7px"/><path d="M0 0h1020.5v1020.5H0zm0 992.1h1020.5M954 963.8h66.5M0 963.8h576.3M0 935.4h1020.5M0 907.1h1020.5M0 878.7h1020.5M0 850.4h1020.5M0 822h1020.5M0 793.7h1020.5M0 765.4h1020.5M0 737h1020.5M0 708.7h1020.5M0 680.3h1020.5M0 652h1020.5M0 623.6h1020.5M0 595.3h1020.5M0 566.9h1020.5M0 538.6h1020.5M0 510.2h1020.5M0 481.9h1020.5M0 453.5h1020.5M0 425.2h1020.5M0 396.9h1020.5M0 368.5h1020.5M0 340.2h1020.5M0 311.8h1020.5M0 283.5h1020.5M0 255.1h1020.5M0 226.8h1020.5M0 198.4h1020.5M0 170.1h1020.5M0 141.7h1020.5M0 113.4h1020.5M0 85h1020.5M0 56.7h1020.5M0 28.3h1020.5M992.1 0v1020.5M963.8 0v1020.5m-28.4-36.2v36.2M935.4 0v944.9m-28.3 39.4v36.2M907.1 0v944.9m-28.3 39.4-.1 36.2M878.7 0v944.9m-28.2 39.4-.1 36.2M850.4 0v944.9m-28.3 39.4-.1 36.2M822 0v944.9m-28.2 39.4-.1 36.2M793.7 0v944.9M765.4 0v935.4M737 984.2v36.3M737 0v944.9m-28.3 39.3v36.3M708.7 0v944.9m-28.4 39.3v36.3M680.3 0v944.9M652 984.2v36.3M652 0v944.9m-28.4 39.3v36.3M623.6 0v944.9m-28.3 39.3v36.3M595.3 0v944.9M566.9 0v1020.5M538.6 0v1020.5M510.2 0v1020.5M481.9 0v1020.5M453.5 0v1020.5M425.2 0v1020.5M396.9 0v1020.5M368.5 0v1020.5M340.2 0v1020.5M311.8 0v1020.5M283.5 0v1020.5M255.1 0v1020.5M226.8 0v1020.5M198.4 0v1020.5M170.1 0v1020.5M141.7 0v1020.5M113.4 0v1020.5M85 0v1020.5M56.7 0v1020.5M28.3 0v1020.5" style="fill:none;stroke:#fff;stroke-miterlimit:10;stroke-width:.7px"/><path d="M0 765.4h255.1v255.1H0zm255.1 0h255.1v255.1H255.1zm510.3 226.7v28.4H510.2V765.4h255.2v170m0 9.5V765.4h255.1v255.1H765.4v-36.3M0 510.2h255.1v255.1H0zm255.1 0h255.1v255.1H255.1zm255.1 0h255.1v255.1H510.2zm255.2 0h255.1v255.1H765.4zM0 255.1h255.1v255.1H0zm255.1 0h255.1v255.1H255.1zm255.1 0h255.1v255.1H510.2zm255.2 0h255.1v255.1H765.4zM0 0h255.1v255.1H0zm255.1 0h255.1v255.1H255.1zm255.1 0h255.1v255.1H510.2zm255.2 0h255.1v255.1H765.4z" style="fill:none;stroke:#fff;stroke-miterlimit:10;stroke-width:1.4px"/><path d="M584.3 964.3a15 15 0 0 1 3.4-9.6 12 12 0 0 1 9.3-3.9q3 0 5.3 1a12 12 0 0 1 6.5 7.2 16 16 0 0 1 0 10.5q-.9 2.4-2.5 4.2a12 12 0 0 1-4 2.8q-2.4 1-5.3 1c-2.9 0-3.8-.3-5.3-1a12 12 0 0 1-6.5-7 15 15 0 0 1-.9-5.2m5.7 0a12 12 0 0 0 1.6 6 7 7 0 0 0 2.2 2q1.4.7 3.2.7c1.8 0 2.4-.2 3.2-.7a6 6 0 0 0 2.2-2q.9-1.2 1.2-2.8c.3-1.6.4-2.1.4-3.2s-.1-2.2-.4-3.3q-.4-1.6-1.2-2.8a5 5 0 0 0-2.2-2q-1.4-.7-3.2-.7c-1.8 0-2.4.2-3.2.7a7 7 0 0 0-3.4 4.8 12 12 0 0 0-.4 3.3m23.4-13h13.9q1.8 0 3.1.6t2.4 1.5q1 1 1.5 2.3t.5 2.7a7 7 0 0 1-1 3.9 6 6 0 0 1-3.1 2.5q1 .4 1.7 1t1.1 1.4q.5.8.6 1.8l.3 1.9v1.4l.1 1.7q0 .9.3 1.6.1.8.6 1.3h-5.7l-.4-1.3-.2-1.5-.1-1.7q0-.9-.2-1.6a6 6 0 0 0-1.2-3q-.9-.9-3.1-.9h-5.7v10h-5.7v-25.7Zm5.7 11.6h6.2q1.9 0 2.9-.9t1-2.8c0-1.9-.3-2.2-1-2.7q-1-.8-2.9-.8h-6.2zm20.3-11.6h5.7V977h-5.7zm29.2 22.8a8 8 0 0 1-3.3 2.7q-1.9.8-3.7.8a13 13 0 0 1-9.3-3.8 13 13 0 0 1-2.5-4.2q-.9-2.4-.9-5.2c0-2.8.3-3.7.9-5.3a12 12 0 0 1 6.5-7.2q2.4-1 5.3-1c2.9 0 2.6.2 3.8.6q1.8.6 3.3 1.7t2.5 2.8c1 1.6 1.1 2.4 1.2 3.9H667a5 5 0 0 0-2-3.2q-1.5-1-3.5-1.1c-2-.1-2.4.2-3.2.7a7 7 0 0 0-3.4 4.8q-.4 1.6-.4 3.3a12 12 0 0 0 1.6 6 7 7 0 0 0 2.2 2q1.4.7 3.2.7 2.8 0 4.3-1.4t1.8-4.1h-5.7v-4.2h10.8v13.9h-3.6l-.6-2.9Zm8.8-22.8h5.7V977h-5.7zm10.6 0h5.6l10.7 17.2v-17.2h5.3V977h-5.7l-10.7-17.2V977h-5.3zm33.7 0h5.8l9.6 25.7h-5.9l-1.9-5.7h-9.6l-2 5.7H712zm-.5 15.8h6.7l-3.2-9.4-3.3 9.4Zm18.1-15.8h5.7v21h12.5v4.8h-18.2zm31.4 0h11.6q2.4 0 4.1.7c1.7.7 2 1.1 2.8 1.9q1 1.2 1.5 2.6t.5 3c0 1.5-.2 2.1-.5 3.1q-.4 1.5-1.5 2.6-1 1.2-2.8 1.9c-1.8.7-2.5.7-4.1.7h-5.9v9.2h-5.7zm5.7 12.1h4.4l1.9-.1q.9 0 1.6-.6t1.1-1.2q.4-.8.4-2c0-1.2-.1-1.5-.4-2q-.4-.7-1.1-1.2t-1.6-.6l-1.9-.1h-4.4v7.7Zm18.3-12.1h13.9q1.8 0 3.1.6t2.4 1.5q1 1 1.5 2.3t.5 2.7a7 7 0 0 1-1 3.9 6 6 0 0 1-3.1 2.5q1 .4 1.7 1t1.1 1.4.6 1.8l.3 1.9v1.4l.1 1.7q0 .9.3 1.6.1.8.6 1.3H811l-.4-1.3-.2-1.5-.1-1.7q0-.9-.2-1.6a6 6 0 0 0-1.2-3q-.9-.9-3.1-.9h-5.7v10h-5.7v-25.7Zm5.7 11.6h6.2q1.9 0 2.9-.9t1-2.8c0-1.9-.3-2.2-1-2.7q-1-.8-2.9-.8h-6.2zm42.1 4.4q0 5.3-2.9 7.8-2.8 2.6-8.1 2.6c-5.3 0-6.2-.8-8.1-2.5q-2.9-2.6-2.9-7.8v-16h5.7v16l.2 2.1c.2 1.1.4 1.3.8 1.8q.6.7 1.6 1.3a7 7 0 0 0 2.8.5q3 0 4.2-1.4t1.2-4.2v-16h5.7v16Zm8.7 1.2a5 5 0 0 0 1.7 3.7l1.8.8q1 .3 2.2.3l1.6-.1q.9 0 1.6-.5l1.3-1q.5-.6.5-1.6 0-1.3-.7-1.7-.6-.6-1.7-1.1l-2.4-.8a38 38 0 0 1-5.6-1.6q-1.4-.5-2.4-1.3a7 7 0 0 1-2.4-5.1q0-2 .8-3.4.9-1.5 2.2-2.4 1.3-1 3.1-1.4a14 14 0 0 1 7.4 0q1.8.4 3.3 1.5a7 7 0 0 1 3.1 6.4h-5.5q0-1.2-.5-1.9-.6-.9-1.1-1.2-.7-.5-1.6-.6l-1.9-.2-1.4.1q-.7.1-1.2.5a2 2 0 0 0-.9.9q-.4.5-.4 1.4c0 .9 0 .9.3 1.2q.3.5 1.1.8l2.3.8 3.9 1 1.2.3 1.6.5 1.7.9q.9.6 1.5 1.3t1.1 1.9q.4 1.1.4 2.5 0 2-.7 3.3-.7 1.5-2 2.6-1.4 1-3.3 1.7-2 .6-4.6.6c-2.6 0-2.8-.2-4.1-.5q-2-.5-3.5-1.7a8 8 0 0 1-3.3-6.9zm26.5-17.2h5.8l9.6 25.7h-5.9l-1.9-5.7h-9.6l-2 5.7H868zm-.5 15.8h6.7l-3.2-9.4-3.3 9.4Zm34.5-3.5-8.3-12.2h6.6l5 8.2 5.2-8.2h6.2l-8.2 12.3 9 13.4h-6.7l-5.6-8.9-5.7 8.9h-6.4l9-13.5Zm17.7-12.3h5.7v21h12.5v4.8h-18.2z" style="fill:#fff"/></svg>
\ No newline at end of file
diff --git a/resources/profiles/Prusa/filament/Prusa Generic FLEX @XL 5T.json b/resources/profiles/Prusa/filament/Prusa Generic FLEX @XL 5T.json
new file mode 100644
index 0000000000..0365f748f3
--- /dev/null
+++ b/resources/profiles/Prusa/filament/Prusa Generic FLEX @XL 5T.json	
@@ -0,0 +1,35 @@
+{
+  "type": "filament",
+  "setting_id": "GFSA04",
+  "name": "Prusa Generic FLEX @XL 5T",
+  "from": "system",
+  "instantiation": "true",
+  "inherits": "fdm_filament_flex",
+  "filament_loading_speed_start": "3",
+  "filament_loading_speed": "28",
+  "filament_unloading_speed_start": "100",
+  "filament_unloading_speed": "90",
+  "filament_load_time": "0",
+  "filament_unload_time": "0",
+  "filament_cooling_moves": "4",
+  "filament_cooling_initial_speed": "2.2",
+  "filament_cooling_final_speed": "3.4",
+  "filament_retract_lift_below": "0.6",
+  "filament_multitool_ramming": [
+    "0"
+  ],
+  "filament_multitool_ramming_volume": [
+    "40"
+  ],
+  "filament_multitool_ramming_flow": [
+    "2.5"
+  ],
+  "compatible_printers": [
+    "Prusa XL 5T 0.25 nozzle",
+    "Prusa XL 5T 0.3 nozzle",
+    "Prusa XL 5T 0.4 nozzle",
+    "Prusa XL 5T 0.5 nozzle",
+    "Prusa XL 5T 0.6 nozzle",
+    "Prusa XL 5T 0.8 nozzle"
+  ]
+}
diff --git a/resources/profiles/Prusa/filament/Prusa Generic FLEX @XL.json b/resources/profiles/Prusa/filament/Prusa Generic FLEX @XL.json
new file mode 100644
index 0000000000..c3883b61bb
--- /dev/null
+++ b/resources/profiles/Prusa/filament/Prusa Generic FLEX @XL.json	
@@ -0,0 +1,35 @@
+{
+  "type": "filament",
+  "setting_id": "GFSA04",
+  "name": "Prusa Generic FLEX @XL",
+  "from": "system",
+  "instantiation": "true",
+  "inherits": "fdm_filament_flex",
+  "filament_loading_speed_start": "3",
+  "filament_loading_speed": "28",
+  "filament_unloading_speed_start": "100",
+  "filament_unloading_speed": "90",
+  "filament_load_time": "0",
+  "filament_unload_time": "0",
+  "filament_cooling_moves": "4",
+  "filament_cooling_initial_speed": "2.2",
+  "filament_cooling_final_speed": "3.4",
+  "filament_retract_lift_below": "0.6",
+  "filament_multitool_ramming": [
+    "0"
+  ],
+  "filament_multitool_ramming_volume": [
+    "40"
+  ],
+  "filament_multitool_ramming_flow": [
+    "2.5"
+  ],
+  "compatible_printers": [
+    "Prusa XL 0.25 nozzle",
+    "Prusa XL 0.3 nozzle",
+    "Prusa XL 0.4 nozzle",
+    "Prusa XL 0.5 nozzle",
+    "Prusa XL 0.6 nozzle",
+    "Prusa XL 0.8 nozzle"
+  ]
+}
diff --git a/resources/profiles/Prusa/filament/fdm_filament_flex.json b/resources/profiles/Prusa/filament/fdm_filament_flex.json
new file mode 100644
index 0000000000..c69f9206ef
--- /dev/null
+++ b/resources/profiles/Prusa/filament/fdm_filament_flex.json
@@ -0,0 +1,76 @@
+{
+    "type": "filament",
+    "name": "fdm_filament_flex",
+    "from": "system",
+    "instantiation": "false",
+    "inherits": "fdm_filament_common",
+    "filament_id": "GFU99",
+    "hot_plate_temp_initial_layer" : [
+        "50"
+    ],
+    "hot_plate_temp" : [
+        "50"
+    ],
+    "fan_cooling_layer_time": [
+        "100"
+    ],
+    "filament_max_volumetric_speed": [
+        "2.5"
+    ],
+    "filament_type": [
+        "FLEX"
+    ],
+    "filament_density": [
+        "1.22"
+    ],
+    "filament_cost": [
+        "20"
+    ],
+    "filament_retraction_length": [
+        "2.5"
+    ],
+    "filament_retraction_speed": [
+        "60"
+    ],
+    "filament_deretraction_speed": [
+        "20"
+    ],
+    "filament_retraction_minimum_travel": [
+        "2"
+    ],
+    "filament_wipe": "0",
+    "idle_temperature": "70",
+    "nozzle_temperature_initial_layer": [
+        "230"
+    ],
+    "reduce_fan_stop_start_freq": [
+        "1"
+    ],
+    "slow_down_for_layer_cooling": [
+        "1"
+    ],
+    "fan_max_speed": [
+        "30"
+    ],
+    "fan_min_speed": [
+        "30"
+    ],
+    "overhang_fan_speed": [
+        "80"
+    ],
+    "additional_cooling_fan_speed": [
+        "70"
+    ],
+    "close_fan_the_first_x_layers": [
+        "3"
+    ],
+    "nozzle_temperature": [
+        "230"
+    ],
+    "filament_start_gcode": [
+        "M900 K0 ; Filament gcode\n\nM142 S36 ; set heatbreak target temp"
+    ],
+    "filament_end_gcode": [
+        "; Filament-specific end gcode"
+    ]
+}
diff --git a/resources/profiles/Prusa/machine/Prusa XL 0.3 nozzle.json b/resources/profiles/Prusa/machine/Prusa XL 0.3 nozzle.json
index b678114c03..d0c7bccead 100644
--- a/resources/profiles/Prusa/machine/Prusa XL 0.3 nozzle.json	
+++ b/resources/profiles/Prusa/machine/Prusa XL 0.3 nozzle.json	
@@ -4,7 +4,7 @@
     "name": "Prusa XL 0.3 nozzle",
     "from": "system",
     "instantiation": "true",
-    "inherits": "fdm_machine_common",
+    "inherits": "fdm_machine_common_xl",
     "gcode_flavor": "marlin2",
     "printer_model": "Prusa XL",
     "default_filament_profile": "Prusa Generic PLA @XL",
diff --git a/resources/profiles/Prusa/machine/Prusa XL 5T 0.25 nozzle.json b/resources/profiles/Prusa/machine/Prusa XL 5T 0.25 nozzle.json
index 2fc6b341b5..a61555bf9f 100644
--- a/resources/profiles/Prusa/machine/Prusa XL 5T 0.25 nozzle.json	
+++ b/resources/profiles/Prusa/machine/Prusa XL 5T 0.25 nozzle.json	
@@ -10,6 +10,8 @@
     "default_filament_profile": "Prusa Generic PLA @XL 5T",
     "default_print_profile": "0.15mm Speed @Prusa XL 5T 0.25",
     "printer_variant": "0.25",
+    "max_layer_height": "0.15",
+    "min_layer_height": "0.05",
     "nozzle_diameter": [
         "0.25",
         "0.25",
diff --git a/resources/profiles/Prusa/machine/Prusa XL 5T 0.3 nozzle.json b/resources/profiles/Prusa/machine/Prusa XL 5T 0.3 nozzle.json
index a495d26349..99e42ae4e3 100644
--- a/resources/profiles/Prusa/machine/Prusa XL 5T 0.3 nozzle.json	
+++ b/resources/profiles/Prusa/machine/Prusa XL 5T 0.3 nozzle.json	
@@ -10,6 +10,8 @@
     "default_filament_profile": "Prusa Generic PLA @XL 5T",
     "default_print_profile": "0.20mm Speed @Prusa XL 5T 0.3",
     "printer_variant": "0.3",
+    "max_layer_height": "0.22",
+    "min_layer_height": "0.05",
     "nozzle_diameter": [
         "0.3",
         "0.3",
diff --git a/resources/profiles/Prusa/machine/Prusa XL 5T 0.5 nozzle.json b/resources/profiles/Prusa/machine/Prusa XL 5T 0.5 nozzle.json
index 69e355ea2f..f7e51b0848 100644
--- a/resources/profiles/Prusa/machine/Prusa XL 5T 0.5 nozzle.json	
+++ b/resources/profiles/Prusa/machine/Prusa XL 5T 0.5 nozzle.json	
@@ -10,6 +10,7 @@
     "default_filament_profile": "Prusa Generic PLA @XL 5T",
     "default_print_profile": "0.25mm Speed @Prusa XL 5T 0.5",
     "printer_variant": "0.5",
+    "max_layer_height": "0.32",
     "nozzle_diameter": [
         "0.5",
         "0.5",
diff --git a/resources/profiles/Prusa/machine/Prusa XL 5T 0.6 nozzle.json b/resources/profiles/Prusa/machine/Prusa XL 5T 0.6 nozzle.json
index 03ef5d97ff..7961d12142 100644
--- a/resources/profiles/Prusa/machine/Prusa XL 5T 0.6 nozzle.json	
+++ b/resources/profiles/Prusa/machine/Prusa XL 5T 0.6 nozzle.json	
@@ -10,6 +10,8 @@
     "default_filament_profile": "Prusa Generic PLA @XL 5T",
     "default_print_profile": "0.32mm Speed @Prusa XL 5T 0.6",
     "printer_variant": "0.6",
+    "max_layer_height": "0.4",
+    "min_layer_height": "0.15",
     "nozzle_diameter": [
         "0.6",
         "0.6",
diff --git a/resources/profiles/Prusa/machine/Prusa XL 5T 0.8 nozzle.json b/resources/profiles/Prusa/machine/Prusa XL 5T 0.8 nozzle.json
index 27656c4072..6249fac5aa 100644
--- a/resources/profiles/Prusa/machine/Prusa XL 5T 0.8 nozzle.json	
+++ b/resources/profiles/Prusa/machine/Prusa XL 5T 0.8 nozzle.json	
@@ -10,6 +10,8 @@
     "default_filament_profile": "Prusa Generic PLA @XL 5T",
     "default_print_profile": "0.40mm Quality @Prusa XL 5T 0.8",
     "printer_variant": "0.8",
+    "max_layer_height": "0.6",
+    "min_layer_height": "0.2",
     "nozzle_diameter": [
         "0.8",
         "0.8",
diff --git a/resources/profiles/Prusa/machine/Prusa XL 5T.json b/resources/profiles/Prusa/machine/Prusa XL 5T.json
index 81486d711a..cc5ece5183 100644
--- a/resources/profiles/Prusa/machine/Prusa XL 5T.json	
+++ b/resources/profiles/Prusa/machine/Prusa XL 5T.json	
@@ -8,5 +8,5 @@
     "bed_model": "Prusa XL_bed.stl",
     "bed_texture": "Prusa XL.svg",
     "hotend_model": "",
-    "default_materials": "Prusa Generic PLA @XL 5T;Prusament PLA @XL 5T;Prusament rPLA @XL 5T;Prusa Generic PETG @XL 5T;Prusament PETG @XL 5T;Prusa Generic ABS @XL 5T;Prusament ASA @XL 5T;Prusament PC Blend @XL 5T;Prusament PC-CF @XL 5T;Prusament PVB @XL 5T;Prusament PA-CF @XL 5T"
+    "default_materials": "Prusa Generic PLA @XL 5T;Prusament PLA @XL 5T;Prusament rPLA @XL 5T;Prusa Generic PETG @XL 5T;Prusament PETG @XL 5T;Prusa Generic ABS @XL 5T;Prusament ASA @XL 5T;Prusament PC Blend @XL 5T;Prusament PC-CF @XL 5T;Prusament PVB @XL 5T;Prusament PA-CF @XL 5T;Prusa Generic FLEX @XL 5T"
 }
diff --git a/resources/profiles/Prusa/machine/Prusa XL.json b/resources/profiles/Prusa/machine/Prusa XL.json
index eb8487609c..4525a02841 100644
--- a/resources/profiles/Prusa/machine/Prusa XL.json	
+++ b/resources/profiles/Prusa/machine/Prusa XL.json	
@@ -8,5 +8,5 @@
     "bed_model": "Prusa XL_bed.stl",
     "bed_texture": "Prusa XL.svg",
     "hotend_model": "",
-    "default_materials": "Prusa Generic PLA @XL;Prusament PLA @XL;Prusament rPLA @XL;Prusa Generic PETG @XL;Prusament PETG @XL;Prusa Generic ABS @XL;Prusament ASA @XL;Prusament PC Blend @XL;Prusament PC-CF @XL;Prusament PVB @XL;Prusament PA-CF @XL"
+    "default_materials": "Prusa Generic PLA @XL;Prusament PLA @XL;Prusament rPLA @XL;Prusa Generic PETG @XL;Prusament PETG @XL;Prusa Generic ABS @XL;Prusament ASA @XL;Prusament PC Blend @XL;Prusament PC-CF @XL;Prusament PVB @XL;Prusament PA-CF @XL;Prusa Generic FLEX @XL"
 }
diff --git a/src/libslic3r/PrintConfig.cpp b/src/libslic3r/PrintConfig.cpp
index cbc4560a27..3e07459566 100644
--- a/src/libslic3r/PrintConfig.cpp
+++ b/src/libslic3r/PrintConfig.cpp
@@ -2223,6 +2223,7 @@ void PrintConfigDef::init_fff_params()
     def->enum_values.push_back("BVOH");
     def->enum_values.push_back("PCTG");
     def->enum_values.push_back("EVA");
+    def->enum_values.push_back("FLEX");
     def->enum_values.push_back("HIPS");
     def->enum_values.push_back("PA");
     def->enum_values.push_back("PA-CF");