diff --git a/src/ArduinoJson/Collection/CollectionData.hpp b/src/ArduinoJson/Collection/CollectionData.hpp
index a1c575c7..5817c7a4 100644
--- a/src/ArduinoJson/Collection/CollectionData.hpp
+++ b/src/ArduinoJson/Collection/CollectionData.hpp
@@ -97,17 +97,15 @@ class CollectionData {
   }
 
  protected:
-  void appendOne(SlotWithId<VariantData> slot,
-                 const ResourceManager* resources);
-  void appendPair(SlotWithId<VariantData> key, SlotWithId<VariantData> value,
+  void appendOne(Slot<VariantData> slot, const ResourceManager* resources);
+  void appendPair(Slot<VariantData> key, Slot<VariantData> value,
                   const ResourceManager* resources);
 
   void removeOne(iterator it, ResourceManager* resources);
   void removePair(iterator it, ResourceManager* resources);
 
  private:
-  SlotWithId<VariantData> getPreviousSlot(VariantData*,
-                                          const ResourceManager*) const;
+  Slot<VariantData> getPreviousSlot(VariantData*, const ResourceManager*) const;
 };
 
 inline const VariantData* collectionToVariant(
diff --git a/src/ArduinoJson/Collection/CollectionImpl.hpp b/src/ArduinoJson/Collection/CollectionImpl.hpp
index 4c022b9c..c0a650c0 100644
--- a/src/ArduinoJson/Collection/CollectionImpl.hpp
+++ b/src/ArduinoJson/Collection/CollectionImpl.hpp
@@ -30,7 +30,7 @@ inline CollectionData::iterator CollectionData::createIterator(
   return iterator(resources->getVariant(head_), head_);
 }
 
-inline void CollectionData::appendOne(SlotWithId<VariantData> slot,
+inline void CollectionData::appendOne(Slot<VariantData> slot,
                                       const ResourceManager* resources) {
   if (tail_ != NULL_SLOT) {
     auto tail = resources->getVariant(tail_);
@@ -42,8 +42,8 @@ inline void CollectionData::appendOne(SlotWithId<VariantData> slot,
   }
 }
 
-inline void CollectionData::appendPair(SlotWithId<VariantData> key,
-                                       SlotWithId<VariantData> value,
+inline void CollectionData::appendPair(Slot<VariantData> key,
+                                       Slot<VariantData> value,
                                        const ResourceManager* resources) {
   key->setNext(value.id());
 
@@ -63,22 +63,22 @@ inline void CollectionData::clear(ResourceManager* resources) {
     auto currId = next;
     auto slot = resources->getVariant(next);
     next = slot->next();
-    resources->freeVariant(SlotWithId<VariantData>(slot, currId));
+    resources->freeVariant({slot, currId});
   }
 
   head_ = NULL_SLOT;
   tail_ = NULL_SLOT;
 }
 
-inline SlotWithId<VariantData> CollectionData::getPreviousSlot(
+inline Slot<VariantData> CollectionData::getPreviousSlot(
     VariantData* target, const ResourceManager* resources) const {
-  auto prev = SlotWithId<VariantData>();
+  auto prev = Slot<VariantData>();
   auto currentId = head_;
   while (currentId != NULL_SLOT) {
     auto currentSlot = resources->getVariant(currentId);
     if (currentSlot == target)
       break;
-    prev = SlotWithId<VariantData>(currentSlot, currentId);
+    prev = Slot<VariantData>(currentSlot, currentId);
     currentId = currentSlot->next();
   }
   return prev;
diff --git a/src/ArduinoJson/Memory/MemoryPool.hpp b/src/ArduinoJson/Memory/MemoryPool.hpp
index 742e9d7b..baa988f0 100644
--- a/src/ArduinoJson/Memory/MemoryPool.hpp
+++ b/src/ArduinoJson/Memory/MemoryPool.hpp
@@ -15,15 +15,15 @@ using SlotCount = SlotId;
 const SlotId NULL_SLOT = SlotId(-1);
 
 template <typename T>
-class SlotWithId {
+class Slot {
  public:
-  SlotWithId() : slot_(nullptr), id_(NULL_SLOT) {}
-  SlotWithId(T* slot, SlotId id) : slot_(slot), id_(id) {
-    ARDUINOJSON_ASSERT((slot == nullptr) == (id == NULL_SLOT));
+  Slot() : ptr_(nullptr), id_(NULL_SLOT) {}
+  Slot(T* p, SlotId id) : ptr_(p), id_(id) {
+    ARDUINOJSON_ASSERT((p == nullptr) == (id == NULL_SLOT));
   }
 
   explicit operator bool() const {
-    return slot_ != nullptr;
+    return ptr_ != nullptr;
   }
 
   SlotId id() const {
@@ -31,16 +31,16 @@ class SlotWithId {
   }
 
   T* ptr() const {
-    return slot_;
+    return ptr_;
   }
 
   T* operator->() const {
-    ARDUINOJSON_ASSERT(slot_ != nullptr);
-    return slot_;
+    ARDUINOJSON_ASSERT(ptr_ != nullptr);
+    return ptr_;
   }
 
  private:
-  T* slot_;
+  T* ptr_;
   SlotId id_;
 };
 
@@ -62,7 +62,7 @@ class MemoryPool {
     usage_ = 0;
   }
 
-  SlotWithId<T> allocSlot() {
+  Slot<T> allocSlot() {
     if (!slots_)
       return {};
     if (usage_ >= capacity_)
diff --git a/src/ArduinoJson/Memory/MemoryPoolList.hpp b/src/ArduinoJson/Memory/MemoryPoolList.hpp
index 0aea4992..dc6503c7 100644
--- a/src/ArduinoJson/Memory/MemoryPoolList.hpp
+++ b/src/ArduinoJson/Memory/MemoryPoolList.hpp
@@ -79,7 +79,7 @@ class MemoryPoolList {
     return *this;
   }
 
-  SlotWithId<T> allocSlot(Allocator* allocator) {
+  Slot<T> allocSlot(Allocator* allocator) {
     // try to allocate from free list
     if (freeList_ != NULL_SLOT) {
       return allocFromFreeList();
@@ -100,7 +100,7 @@ class MemoryPoolList {
     return allocFromLastPool();
   }
 
-  void freeSlot(SlotWithId<T> slot) {
+  void freeSlot(Slot<T> slot) {
     reinterpret_cast<FreeSlot*>(slot.ptr())->next = freeList_;
     freeList_ = slot.id();
   }
@@ -149,7 +149,7 @@ class MemoryPoolList {
   }
 
  private:
-  SlotWithId<T> allocFromFreeList() {
+  Slot<T> allocFromFreeList() {
     ARDUINOJSON_ASSERT(freeList_ != NULL_SLOT);
     auto id = freeList_;
     auto slot = getSlot(freeList_);
@@ -157,7 +157,7 @@ class MemoryPoolList {
     return {slot, id};
   }
 
-  SlotWithId<T> allocFromLastPool() {
+  Slot<T> allocFromLastPool() {
     ARDUINOJSON_ASSERT(count_ > 0);
     auto poolIndex = SlotId(count_ - 1);
     auto slot = pools_[poolIndex].allocSlot();
diff --git a/src/ArduinoJson/Memory/ResourceManager.hpp b/src/ArduinoJson/Memory/ResourceManager.hpp
index 7b23923e..e8e594b5 100644
--- a/src/ArduinoJson/Memory/ResourceManager.hpp
+++ b/src/ArduinoJson/Memory/ResourceManager.hpp
@@ -49,9 +49,9 @@ class ResourceManager {
     return overflowed_;
   }
 
-  SlotWithId<VariantData> allocVariant();
+  Slot<VariantData> allocVariant();
 
-  void freeVariant(SlotWithId<VariantData> slot);
+  void freeVariant(Slot<VariantData> slot);
 
   VariantData* getVariant(SlotId id) const;
 
diff --git a/src/ArduinoJson/Memory/ResourceManagerImpl.hpp b/src/ArduinoJson/Memory/ResourceManagerImpl.hpp
index 73200f45..db89a045 100644
--- a/src/ArduinoJson/Memory/ResourceManagerImpl.hpp
+++ b/src/ArduinoJson/Memory/ResourceManagerImpl.hpp
@@ -10,7 +10,7 @@
 
 ARDUINOJSON_BEGIN_PRIVATE_NAMESPACE
 
-inline SlotWithId<VariantData> ResourceManager::allocVariant() {
+inline Slot<VariantData> ResourceManager::allocVariant() {
   auto p = variantPools_.allocSlot(allocator_);
   if (!p) {
     overflowed_ = true;
@@ -19,7 +19,7 @@ inline SlotWithId<VariantData> ResourceManager::allocVariant() {
   return {new (p.ptr()) VariantData, p.id()};
 }
 
-inline void ResourceManager::freeVariant(SlotWithId<VariantData> variant) {
+inline void ResourceManager::freeVariant(Slot<VariantData> variant) {
   variant->setNull(this);
   variantPools_.freeSlot(variant);
 }