diff --git a/src/main/java/fi/septicuss/tooltips/Tooltips.java b/src/main/java/fi/septicuss/tooltips/Tooltips.java
index 2a034fe..b49b342 100644
--- a/src/main/java/fi/septicuss/tooltips/Tooltips.java
+++ b/src/main/java/fi/septicuss/tooltips/Tooltips.java
@@ -15,10 +15,7 @@
 import fi.septicuss.tooltips.listener.PlayerMovementListener;
 import fi.septicuss.tooltips.managers.condition.ConditionManager;
 import fi.septicuss.tooltips.managers.condition.impl.Compare;
-import fi.septicuss.tooltips.managers.condition.impl.equals.BlockNbtEquals;
-import fi.septicuss.tooltips.managers.condition.impl.equals.BlockStateEquals;
-import fi.septicuss.tooltips.managers.condition.impl.equals.EntityNbtEquals;
-import fi.septicuss.tooltips.managers.condition.impl.equals.ItemNbtEquals;
+import fi.septicuss.tooltips.managers.condition.impl.equals.*;
 import fi.septicuss.tooltips.managers.condition.impl.lookingat.LookingAtBlock;
 import fi.septicuss.tooltips.managers.condition.impl.lookingat.LookingAtCitizen;
 import fi.septicuss.tooltips.managers.condition.impl.lookingat.LookingAtEntity;
@@ -178,6 +175,7 @@ private void registerConditions() {
 				new Location(),
 				new StandingOn(),
 				new ItemNbtEquals(),
+				new ItemsAdderIdEquals(),
 				new EntityNbtEquals(),
 				new BlockNbtEquals(),
 				new BlockStateEquals(),
diff --git a/src/main/java/fi/septicuss/tooltips/managers/condition/impl/equals/ItemsAdderIdEquals.java b/src/main/java/fi/septicuss/tooltips/managers/condition/impl/equals/ItemsAdderIdEquals.java
new file mode 100644
index 0000000..d723716
--- /dev/null
+++ b/src/main/java/fi/septicuss/tooltips/managers/condition/impl/equals/ItemsAdderIdEquals.java
@@ -0,0 +1,66 @@
+package fi.septicuss.tooltips.managers.condition.impl.equals;
+
+import dev.lone.itemsadder.api.CustomStack;
+import fi.septicuss.tooltips.managers.condition.Condition;
+import fi.septicuss.tooltips.managers.condition.argument.Arguments;
+import fi.septicuss.tooltips.utils.validation.Validity;
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.EquipmentSlot;
+import org.bukkit.inventory.ItemStack;
+
+public class ItemsAdderIdEquals implements Condition {
+
+    private static final String[] SLOT = { "slot", "s" };
+    private static final String[] MATERIAL = { "type", "m", "mat", "material" };
+
+    public boolean check(Player player, Arguments args) {
+        EquipmentSlot slot = EquipmentSlot.HAND;
+        if (args.has(SLOT)) {
+            slot = EquipmentSlot.valueOf(args.get(SLOT).getAsString().strip().toUpperCase());
+        }
+
+        ItemStack item = player.getInventory().getItem(slot);
+
+        if (item == null || item.getType().isAir()) {
+            return false;
+        }
+
+        CustomStack customStack = CustomStack.byItemStack(item);
+        if (customStack != null) {
+            String material = args.get(MATERIAL).getAsString();
+            String id = customStack.getNamespace() + ":" + customStack.getId();
+            if (material.equals(id)) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    public Validity valid(Arguments args) {
+        if (!Bukkit.getPluginManager().isPluginEnabled("ItemsAdder")) {
+            return Validity.of(false, "Cannot use itemsadderidequals because ItemsAdder is not installed");
+        }
+
+        if (!args.has(MATERIAL)) {
+            return Validity.of(false, "Type argument is required");
+        }
+
+        if (args.has(SLOT)) {
+            String slot = args.get(SLOT).getAsString();
+            try {
+                return Validity.of(false, "Unknown slot " + quote(slot));
+            } catch (IllegalArgumentException e) {
+                return Validity.of(false, null);
+            }
+        }
+
+        return Validity.TRUE;
+    }
+
+    @Override
+    public String id() {
+        return "itemsadderidequals";
+    }
+}