diff --git a/src/quic/node_quic_socket-inl.h b/src/quic/node_quic_socket-inl.h
index 3e9adab6f263c2..8156fd04ad7bf5 100644
--- a/src/quic/node_quic_socket-inl.h
+++ b/src/quic/node_quic_socket-inl.h
@@ -18,6 +18,7 @@ namespace quic {
 std::unique_ptr<QuicPacket> QuicPacket::Create(
     const char* diagnostic_label,
     size_t len) {
+  CHECK_LE(len, MAX_PKTLEN);
   return std::make_unique<QuicPacket>(diagnostic_label, len);
 }
 
@@ -27,8 +28,8 @@ std::unique_ptr<QuicPacket> QuicPacket::Copy(
 }
 
 void QuicPacket::set_length(size_t len) {
-  CHECK_LE(len, data_.size());
-  data_.resize(len);
+  CHECK_LE(len, MAX_PKTLEN);
+  len_ = len;
 }
 
 int QuicEndpoint::Send(
diff --git a/src/quic/node_quic_socket.cc b/src/quic/node_quic_socket.cc
index 839c33f5bf42db..28ca2a52336a1c 100644
--- a/src/quic/node_quic_socket.cc
+++ b/src/quic/node_quic_socket.cc
@@ -83,14 +83,15 @@ bool IsShortHeader(
 }  // namespace
 
 QuicPacket::QuicPacket(const char* diagnostic_label, size_t len) :
-    data_(len),
+    data_{0},
+    len_(len),
     diagnostic_label_(diagnostic_label) {
-  CHECK_LE(len, NGTCP2_MAX_PKT_SIZE);
+  CHECK_LE(len, MAX_PKTLEN);
 }
 
 QuicPacket::QuicPacket(const QuicPacket& other) :
-  QuicPacket(other.diagnostic_label_, other.data_.size()) {
-  memcpy(data_.data(), other.data_.data(), other.data_.size());
+  QuicPacket(other.diagnostic_label_, other.len_) {
+  memcpy(&data_, &other.data_, other.len_);
 }
 
 const char* QuicPacket::diagnostic_label() const {
@@ -98,9 +99,7 @@ const char* QuicPacket::diagnostic_label() const {
       diagnostic_label_ : "unspecified";
 }
 
-void QuicPacket::MemoryInfo(MemoryTracker* tracker) const {
-  tracker->TrackField("data", data_);
-}
+void QuicPacket::MemoryInfo(MemoryTracker* tracker) const {}
 
 QuicSocketListener::~QuicSocketListener() {
   if (socket_)
diff --git a/src/quic/node_quic_socket.h b/src/quic/node_quic_socket.h
index 01f6e276563abb..badad5aed1e82c 100644
--- a/src/quic/node_quic_socket.h
+++ b/src/quic/node_quic_socket.h
@@ -112,6 +112,13 @@ class JSQuicSocketListener : public QuicSocketListener {
   void OnDestroy() override;
 };
 
+// This is just a formality as the QUIC spec normatively
+// defines that the ipv4 max pktlen is always going to be
+// larger than the ipv6 max pktlen, but in the off chance
+// ever changes (which is unlikely) we check here.
+constexpr size_t MAX_PKTLEN =
+    std::max<size_t>(NGTCP2_MAX_PKTLEN_IPV4, NGTCP2_MAX_PKTLEN_IPV6);
+
 // A serialized QuicPacket to be sent by a QuicSocket instance.
 class QuicPacket : public MemoryRetainer {
  public:
@@ -141,7 +148,7 @@ class QuicPacket : public MemoryRetainer {
   // QuicPacket instance will be freed.
   static inline std::unique_ptr<QuicPacket> Create(
       const char* diagnostic_label = nullptr,
-      size_t len = NGTCP2_MAX_PKTLEN_IPV4);
+      size_t len = MAX_PKTLEN);
 
   // Copy the data of the QuicPacket to a new one. Currently,
   // this is only used when retransmitting close connection
@@ -151,11 +158,11 @@ class QuicPacket : public MemoryRetainer {
 
   QuicPacket(const char* diagnostic_label, size_t len);
   QuicPacket(const QuicPacket& other);
-  uint8_t* data() { return data_.data(); }
-  size_t length() const { return data_.size(); }
+  uint8_t* data() { return data_; }
+  size_t length() const { return len_; }
   uv_buf_t buf() const {
     return uv_buf_init(
-      const_cast<char*>(reinterpret_cast<const char*>(data_.data())),
+      const_cast<char*>(reinterpret_cast<const char*>(&data_)),
       length());
   }
   inline void set_length(size_t len);
@@ -166,7 +173,8 @@ class QuicPacket : public MemoryRetainer {
   SET_SELF_SIZE(QuicPacket);
 
  private:
-  std::vector<uint8_t> data_;
+  uint8_t data_[MAX_PKTLEN];
+  size_t len_ = MAX_PKTLEN;
   const char* diagnostic_label_ = nullptr;
 };