diff --git a/include/flatmemory/details/containers/unordered_set.hpp b/include/flatmemory/details/containers/unordered_set.hpp
index ec59089..25f8253 100644
--- a/include/flatmemory/details/containers/unordered_set.hpp
+++ b/include/flatmemory/details/containers/unordered_set.hpp
@@ -27,6 +27,9 @@ class UnorderedSet
     // Data to be accessed
     std::unordered_set<ConstView<T>, Hash, Equal, Allocator> m_data;
 
+    using iterator = std::unordered_set<ConstView<T>, Hash, Equal, Allocator>::iterator;
+    using const_iterator = std::unordered_set<ConstView<T>, Hash, Equal, Allocator>::const_iterator;
+
 public:
     explicit UnorderedSet(NumBytes n = 1000000) 
         : m_storage(ByteBufferSegmented(n)) { }
@@ -41,10 +44,10 @@ class UnorderedSet
      * Iterators
     */
 
-    [[nodiscard]] decltype(auto) begin() { return m_data.begin(); }
-    [[nodiscard]] decltype(auto) begin() const { return m_data.begin(); }
-    [[nodiscard]] decltype(auto) end() { return m_data.end(); }
-    [[nodiscard]] decltype(auto) end() const { return m_data.end(); }
+    [[nodiscard]] iterator begin() { return m_data.begin(); }
+    [[nodiscard]] const_iterator begin() const { return m_data.begin(); }
+    [[nodiscard]] iterator end() { return m_data.end(); }
+    [[nodiscard]] const_iterator end() const { return m_data.end(); }
 
 
     /**
@@ -87,8 +90,8 @@ class UnorderedSet
 
     [[nodiscard]] size_t count(ConstView<T> key) const { return m_data.count(key); }
 
-    [[nodiscard]] decltype(auto) find(ConstView<T> key) { return m_data.find(key); }
-    [[nodiscard]] decltype(auto) find(ConstView<T> key) const { return m_data.find(key); }
+    [[nodiscard]] iterator find(ConstView<T> key) { return m_data.find(key); }
+    [[nodiscard]] const_iterator find(ConstView<T> key) const { return m_data.find(key); }
 
     [[nodiscard]] bool contains(ConstView<T> key) const { return m_data.contains(key); }
 };
diff --git a/include/flatmemory/details/containers/vector.hpp b/include/flatmemory/details/containers/vector.hpp
index b95fd09..81469cf 100644
--- a/include/flatmemory/details/containers/vector.hpp
+++ b/include/flatmemory/details/containers/vector.hpp
@@ -30,6 +30,9 @@ class VariableSizedTypeVector
     // Data to be accessed
     std::vector<View<T>> m_data;
 
+    using iterator = std::vector<View<T>>::iterator;
+    using const_iterator = std::vector<View<T>>::const_iterator;
+
 public:
     explicit VariableSizedTypeVector(NumBytes n = 1000000) 
         : m_storage(ByteBufferSegmented(n)) { }
@@ -68,10 +71,10 @@ class VariableSizedTypeVector
      * Iterators
     */
 
-    [[nodiscard]] decltype(auto) begin() { return m_data.begin(); }
-    [[nodiscard]] decltype(auto) begin() const { return m_data.begin(); }
-    [[nodiscard]] decltype(auto) end() { return m_data.end(); }
-    [[nodiscard]] decltype(auto) end() const { return m_data.end(); }
+    [[nodiscard]] iterator begin() { return m_data.begin(); }
+    [[nodiscard]] const_iterator begin() const { return m_data.begin(); }
+    [[nodiscard]] iterator end() { return m_data.end(); }
+    [[nodiscard]] const_iterator end() const { return m_data.end(); }
 
 
     /**
@@ -112,6 +115,9 @@ class FixedSizedTypeVector
 
     const Builder<T> m_default_builder;
 
+    using iterator = std::vector<View<T>>::iterator;
+    using const_iterator = std::vector<View<T>>::const_iterator;
+
 public:
     FixedSizedTypeVector(Builder<T>&& default_builder, NumBytes n = 1000000) 
         : m_storage(ByteBufferSegmented(n))
@@ -157,10 +163,10 @@ class FixedSizedTypeVector
      * Iterators
     */
 
-    [[nodiscard]] decltype(auto) begin() { return m_data.begin(); }
-    [[nodiscard]] decltype(auto) begin() const { return m_data.begin(); }
-    [[nodiscard]] decltype(auto) end() { return m_data.end(); }
-    [[nodiscard]] decltype(auto) end() const { return m_data.end(); }
+    [[nodiscard]] iterator begin() { return m_data.begin(); }
+    [[nodiscard]] const_iterator begin() const { return m_data.begin(); }
+    [[nodiscard]] iterator end() { return m_data.end(); }
+    [[nodiscard]] const_iterator end() const { return m_data.end(); }
 
 
     /**
diff --git a/include/flatmemory/details/types/vector.hpp b/include/flatmemory/details/types/vector.hpp
index a06e36d..7c06688 100644
--- a/include/flatmemory/details/types/vector.hpp
+++ b/include/flatmemory/details/types/vector.hpp
@@ -94,6 +94,9 @@ namespace flatmemory
             std::vector<T_> m_data;
             ByteBuffer m_buffer;
 
+            using iterator = std::vector<T_>::iterator;
+            using const_iterator = std::vector<T_>::const_iterator;
+
             /* Implement IBuilder interface. */
             template<typename>
             friend class IBuilder;
@@ -164,10 +167,10 @@ namespace flatmemory
              * Iterators
             */
 
-            decltype(auto) begin() { return m_data.begin(); }
-            decltype(auto) begin() const { return m_data.begin(); }
-            decltype(auto) end() { return m_data.end(); }
-            decltype(auto) end() const { return m_data.end(); }
+            iterator begin() { return m_data.begin(); }
+            const_iterator begin() const { return m_data.begin(); }
+            iterator end() { return m_data.end(); }
+            const_iterator end() const { return m_data.end(); }
 
             /**
              * Capacity