diff --git a/src/impls/slice_copy.rs b/src/impls/slice_copy.rs
index 05fba73..01d9b93 100644
--- a/src/impls/slice_copy.rs
+++ b/src/impls/slice_copy.rs
@@ -72,8 +72,28 @@ where
 
 impl<T: Copy> ReserveItems<CopyRegion<T>> for &[T] {
     fn reserve_items<I>(target: &mut CopyRegion<T>, items: I)
+        where
+            I: Iterator<Item = Self> + Clone,
+    {
+        target.slices.reserve(items.clone().map(|i| i.len()).sum());
+    }
+}
+
+impl<T> CopyOnto<CopyRegion<T>> for &Vec<T>
     where
-        I: Iterator<Item = Self> + Clone,
+        T: Copy,
+{
+    fn copy_onto(self, target: &mut CopyRegion<T>) -> <CopyRegion<T> as Region>::Index {
+        let start = target.slices.len();
+        target.slices.extend_from_slice(self);
+        (start, target.slices.len())
+    }
+}
+
+impl<T: Copy> ReserveItems<CopyRegion<T>> for &Vec<T> {
+    fn reserve_items<I>(target: &mut CopyRegion<T>, items: I)
+        where
+            I: Iterator<Item = Self> + Clone,
     {
         target.slices.reserve(items.clone().map(|i| i.len()).sum());
     }
diff --git a/src/impls/string.rs b/src/impls/string.rs
index bbde61b..3e720a9 100644
--- a/src/impls/string.rs
+++ b/src/impls/string.rs
@@ -92,10 +92,19 @@ impl CopyOnto<StringRegion> for &&str {
 }
 
 impl ReserveItems<StringRegion> for &str {
+    fn reserve_items<I>(target: &mut StringRegion, items: I)
+        where
+            I: Iterator<Item = Self> + Clone,
+    {
+        ReserveItems::reserve_items(&mut target.inner, items.map(str::as_bytes))
+    }
+}
+
+impl ReserveItems<StringRegion> for &&str {
     fn reserve_items<I>(target: &mut StringRegion, items: I)
     where
         I: Iterator<Item = Self> + Clone,
     {
-        ReserveItems::reserve_items(&mut target.inner, items.map(str::as_bytes))
+        ReserveItems::reserve_items(&mut target.inner, items.map(|s| s.as_bytes()))
     }
 }