diff --git a/absl/base/BUILD.bazel b/absl/base/BUILD.bazel
index ade1a011..14867227 100644
--- a/absl/base/BUILD.bazel
+++ b/absl/base/BUILD.bazel
@@ -964,6 +964,9 @@ cc_library(
     hdrs = ["internal/iterator_traits.h"],
     copts = ABSL_DEFAULT_COPTS,
     linkopts = ABSL_DEFAULT_LINKOPTS,
+    visibility = [
+        "//absl:__subpackages__",
+    ],
     deps = [
         ":config",
         "//absl/meta:type_traits",
diff --git a/absl/base/internal/iterator_traits.h b/absl/base/internal/iterator_traits.h
index 472c4368..5fa4df81 100644
--- a/absl/base/internal/iterator_traits.h
+++ b/absl/base/internal/iterator_traits.h
@@ -60,6 +60,10 @@ template <typename IteratorTag, typename Iterator>
 using IsAtLeastIterator =
     std::is_convertible<IteratorConcept<Iterator>, IteratorTag>;
 
+template <typename Iterator>
+using IsAtLeastInputIterator =
+    IsAtLeastIterator<std::input_iterator_tag, Iterator>;
+
 template <typename Iterator>
 using IsAtLeastForwardIterator =
     IsAtLeastIterator<std::forward_iterator_tag, Iterator>;