diff --git a/bench/src/mem_bitvec.rs b/bench/src/mem_bitvec.rs
index b64efae..16cdf67 100644
--- a/bench/src/mem_bitvec.rs
+++ b/bench/src/mem_bitvec.rs
@@ -24,7 +24,9 @@ fn show_memories(p: f64) {
         let mut b = BitVectorBuilder::new();
         b.extend_bits(bits.iter().cloned());
         let idx: BitVector<Rank9SelIndex> = b.freeze::<Rank9SelIndex>();
-        idx.data.size_in_bytes() + idx.index.size_in_bytes()
+        let (len, data) = idx.data.to_bytes();
+        let index = idx.index.to_bytes();
+        data.as_ref().len() + index.as_ref().len() + std::mem::size_of_val(&len)
     };
     print_memory("BitVector<Rank9SelIndex>", bytes);
 
@@ -32,7 +34,9 @@ fn show_memories(p: f64) {
         let mut b = BitVectorBuilder::new();
         b.extend_bits(bits.iter().cloned());
         let idx: BitVector<Rank9SelIndex> = b.freeze::<Rank9SelIndex>();
-        idx.data.size_in_bytes() + idx.index.size_in_bytes()
+        let (len, data) = idx.data.to_bytes();
+        let index = idx.index.to_bytes();
+        data.as_ref().len() + index.as_ref().len() + std::mem::size_of_val(&len)
     };
     print_memory("BitVector<Rank9SelIndex> (with select hints)", bytes);
 }
diff --git a/bench/src/mem_chrseq.rs b/bench/src/mem_chrseq.rs
index d3d923d..0c52a68 100644
--- a/bench/src/mem_chrseq.rs
+++ b/bench/src/mem_chrseq.rs
@@ -33,7 +33,16 @@ fn show_memories(title: &str, text: &CompactVector) {
 
     let bytes = {
         let idx = WaveletMatrix::<Rank9SelIndex>::new(text.clone()).unwrap();
-        idx.size_in_bytes()
+        let layer_bytes: usize = idx
+            .layers
+            .iter()
+            .map(|bv| {
+                let (_, data) = bv.data.to_bytes();
+                let index = bv.index.to_bytes();
+                data.as_ref().len() + index.as_ref().len()
+            })
+            .sum();
+        layer_bytes + std::mem::size_of::<usize>()
     };
     print_memory("WaveletMatrix<Rank9SelIndex>", bytes, text.len());
 }
diff --git a/bench/src/mem_intvec.rs b/bench/src/mem_intvec.rs
index ab96f20..ac71c4b 100644
--- a/bench/src/mem_intvec.rs
+++ b/bench/src/mem_intvec.rs
@@ -36,13 +36,24 @@ fn show_memories(title: &str, vals: &[u32]) {
 
     let bytes = {
         let idx = jerky::int_vectors::CompactVector::from_slice(vals).unwrap();
-        idx.size_in_bytes()
+        let (meta, bytes) = idx.to_bytes();
+        std::mem::size_of_val(&meta) + bytes.as_ref().len()
     };
     print_memory("CompactVector", bytes, vals.len());
 
     let bytes = {
         let idx = jerky::int_vectors::DacsByte::from_slice(vals).unwrap();
-        idx.size_in_bytes()
+        let data_bytes: usize = idx.data.iter().map(|lvl| lvl.as_ref().len()).sum();
+        let flags_bytes: usize = idx
+            .flags
+            .iter()
+            .map(|bv| {
+                let (_, data) = bv.data.to_bytes();
+                let index = bv.index.to_bytes();
+                data.as_ref().len() + index.as_ref().len()
+            })
+            .sum();
+        data_bytes + flags_bytes
     };
     print_memory("DacsByte", bytes, vals.len());
 }