diff --git a/quic/platform/api/quic_mem_slice.h b/quic/platform/api/quic_mem_slice.h
index bcc7123..a40d638 100644
--- a/quic/platform/api/quic_mem_slice.h
+++ b/quic/platform/api/quic_mem_slice.h
@@ -60,6 +60,8 @@
 
   bool empty() const { return impl_.empty(); }
 
+  QuicMemSliceImpl* impl() { return &impl_; }
+
  private:
   QuicMemSliceImpl impl_;
 };
diff --git a/quic/platform/api/quic_mem_slice_span.h b/quic/platform/api/quic_mem_slice_span.h
index 4fdf059..62cec48 100644
--- a/quic/platform/api/quic_mem_slice_span.h
+++ b/quic/platform/api/quic_mem_slice_span.h
@@ -22,6 +22,9 @@
  public:
   explicit QuicMemSliceSpan(QuicMemSliceSpanImpl impl) : impl_(impl) {}
 
+  // Constructs a span with a single QuicMemSlice.
+  explicit QuicMemSliceSpan(QuicMemSlice* slice) : impl_(slice->impl()) {}
+
   QuicMemSliceSpan(const QuicMemSliceSpan& other) = default;
   QuicMemSliceSpan& operator=(const QuicMemSliceSpan& other) = default;
   QuicMemSliceSpan(QuicMemSliceSpan&& other) = default;