diff --git a/quic/platform/api/quic_mem_slice_storage.h b/quic/platform/api/quic_mem_slice_storage.h
index dc48a43..9164e9a 100644
--- a/quic/platform/api/quic_mem_slice_storage.h
+++ b/quic/platform/api/quic_mem_slice_storage.h
@@ -30,6 +30,8 @@
   // Return a QuicMemSliceSpan form of the storage.
   QuicMemSliceSpan ToSpan() { return impl_.ToSpan(); }
 
+  void Append(QuicMemSlice slice) { impl_.Append(std::move(*slice.impl())); }
+
  private:
   QuicMemSliceStorageImpl impl_;
 };
diff --git a/quic/platform/api/quic_mem_slice_storage_test.cc b/quic/platform/api/quic_mem_slice_storage_test.cc
index d0c2588..a13899d 100644
--- a/quic/platform/api/quic_mem_slice_storage_test.cc
+++ b/quic/platform/api/quic_mem_slice_storage_test.cc
@@ -3,8 +3,10 @@
 // found in the LICENSE file.
 
 #include "net/third_party/quiche/src/quic/platform/api/quic_mem_slice_storage.h"
+
 #include "net/third_party/quiche/src/quic/core/quic_simple_buffer_allocator.h"
 #include "net/third_party/quiche/src/quic/platform/api/quic_test.h"
+#include "net/third_party/quiche/src/quic/platform/api/quic_test_mem_slice_vector.h"
 
 namespace quic {
 namespace test {
@@ -55,6 +57,24 @@
   EXPECT_EQ("bbbb", span.GetData(1));
 }
 
+TEST_F(QuicMemSliceStorageImplTest, AppendMemSlices) {
+  std::string body1(3, 'a');
+  std::string body2(4, 'b');
+  std::vector<std::pair<char*, size_t>> buffers;
+  buffers.push_back(
+      std::make_pair(const_cast<char*>(body1.data()), body1.length()));
+  buffers.push_back(
+      std::make_pair(const_cast<char*>(body2.data()), body2.length()));
+  QuicTestMemSliceVector mem_slices(buffers);
+
+  QuicMemSliceStorage storage(nullptr, 0, nullptr, 0);
+  mem_slices.span().ConsumeAll(
+      [&storage](QuicMemSlice slice) { storage.Append(std::move(slice)); });
+
+  EXPECT_EQ("aaa", storage.ToSpan().GetData(0));
+  EXPECT_EQ("bbbb", storage.ToSpan().GetData(1));
+}
+
 }  // namespace
 }  // namespace test
 }  // namespace quic