diff --git a/components/datetime/src/provider/neo.rs b/components/datetime/src/provider/neo.rs
index 90301b57ca3..cc1de2de8ef 100644
--- a/components/datetime/src/provider/neo.rs
+++ b/components/datetime/src/provider/neo.rs
@@ -3,6 +3,7 @@
 // (online at: https://github.com/unicode-org/icu4x/blob/main/LICENSE ).
 
 mod adapter;
+mod packed_pattern;
 
 use crate::pattern::runtime::{self, PatternULE};
 use alloc::borrow::Cow;
diff --git a/components/datetime/src/provider/neo/packed_pattern.rs b/components/datetime/src/provider/neo/packed_pattern.rs
new file mode 100644
index 00000000000..2a4e3a32934
--- /dev/null
+++ b/components/datetime/src/provider/neo/packed_pattern.rs
@@ -0,0 +1,45 @@
+// This file is part of ICU4X. For terms of use, please see the file
+// called LICENSE at the top level of the ICU4X source tree
+// (online at: https://github.com/unicode-org/icu4x/blob/main/LICENSE ).
+
+use icu_plurals::PluralElements;
+use zerovec::VarZeroVec;
+
+use crate::pattern::runtime::{Pattern, PatternULE};
+
+#[derive(Debug)]
+pub struct LengthPluralElements<'a> {
+    pub long: PluralElements<'a, Pattern<'a>>,
+    pub medium: PluralElements<'a, Pattern<'a>>,
+    pub short: PluralElements<'a, Pattern<'a>>,
+}
+
+#[derive(Debug)]
+pub struct PackedSkeletonDataBuilder<'a> {
+    pub standard: LengthPluralElements<'a>,
+    pub variant0: Option<LengthPluralElements<'a>>,
+    pub variant1: Option<LengthPluralElements<'a>>,
+}
+
+// #[zerovec::make_varule(TaggedPatternULE)]
+pub struct TaggedPattern<'data> {
+    pub tag: u8,
+    pub pattern: Pattern<'data>,
+}
+
+#[derive(Debug, PartialEq, Clone)]
+#[cfg_attr(feature = "datagen", derive(serde::Serialize, databake::Bake))]
+#[cfg_attr(feature = "datagen", databake(path = icu_datetime::provider::neo))]
+#[cfg_attr(feature = "serde", derive(serde::Deserialize))]
+pub struct PackedSkeletonDataV2<'data> {
+    pub header: u32,
+    #[cfg_attr(feature = "serde", serde(borrow))]
+    pub patterns: VarZeroVec<'data, PatternULE>,
+}
+
+#[test]
+fn test_sizes() {
+    use core::mem::size_of;
+    assert_eq!(32, size_of::<super::PackedSkeletonDataV1>());
+    assert_eq!(32, size_of::<PackedSkeletonDataV2>());
+}