diff --git a/fuzz/fuzz_targets/common.rs b/fuzz/fuzz_targets/common.rs
index c8c8b989ae..fbef6a3dcc 100644
--- a/fuzz/fuzz_targets/common.rs
+++ b/fuzz/fuzz_targets/common.rs
@@ -124,7 +124,7 @@ macro_rules! test_datatype_roundtrip {
             // Ensure serialization is canonical: re-encoding must match the consumed input.
             assert_eq!(
                 encoded,
-                input[..encoded.get_size()],
+                input[..encoded.len()],
                 "Serialization is not stable"
             );
         }
@@ -162,7 +162,7 @@ macro_rules! test_datatype_roundtrip {
             // reserialization must match the consumed input bytes.
             assert_eq!(
                 encoded,
-                input[..encoded.get_size()],
+                input[..encoded.len()],
                 "{}: Serialization is not stable",
                 stringify!($datatype)
             );
diff --git a/sv2/binary-sv2/README.md b/sv2/binary-sv2/README.md
index d8e6bcf69a..23c6f60c45 100644
--- a/sv2/binary-sv2/README.md
+++ b/sv2/binary-sv2/README.md
@@ -27,10 +27,13 @@ The crate supports the following mappings between Rust and SV2 types
 | `f32`       | `F32`          |  
 | `Str0255`   | `STRO_255`     |  
 | `Signature` | `SIGNATURE`    |  
-| `[u8]`      | `BYTES`        |  
 | `Seq0255`   | `SEQ0_255[T]`  |  
 | `Seq064K`   | `SEQ0_64K[T]`  | 
 
+`BYTES` is not listed above: it only appears as the length-prefixed frame payload, whose length
+comes from the frame header, so it is handled by the framing layer (`framing-sv2`) rather than by
+this crate.
+
 
 ## Features
 
diff --git a/sv2/binary-sv2/src/lib.rs b/sv2/binary-sv2/src/lib.rs
index 32dfb55a42..bc8fa12b03 100644
--- a/sv2/binary-sv2/src/lib.rs
+++ b/sv2/binary-sv2/src/lib.rs
@@ -26,12 +26,15 @@
 //! B0255    <-> B0_255
 //! B064K    <-> B0_64K
 //! B016M    <-> B0_16M
-//! [u8]     <-> BYTES
 //! Pubkey   <-> PUBKEY
 //! Seq0255  <-> SEQ0_255[T]
 //! Seq064K  <-> SEQ0_64K[T]
 //! ```
 //!
+//! `BYTES` is not in this table: it only appears as the length-prefixed frame payload, whose
+//! length comes from the frame header, so it is handled by the framing layer (`framing-sv2`)
+//! rather than by this crate.
+//!
 //! # Encoding & Decoding
 //!
 //! Enables conversion between various Rust types and SV2-specific data formats for efficient
@@ -224,23 +227,3 @@ pub enum Error {
     /// elements.
     Sv2OptionHaveMoreThenOneElement(u8),
 }
-
-/// Vec<u8> is used as the Sv2 type Bytes
-impl GetSize for Vec<u8> {
-    fn get_size(&self) -> usize {
-        self.len()
-    }
-}
-
-impl From<Vec<u8>> for EncodableField<'_> {
-    fn from(v: Vec<u8>) -> Self {
-        EncodableField::Struct(v.into_iter().map(Into::into).collect())
-    }
-}
-
-#[cfg(feature = "with_buffer_pool")]
-impl From<buffer_sv2::Slice> for EncodableField<'_> {
-    fn from(_v: buffer_sv2::Slice) -> Self {
-        unreachable!()
-    }
-}
diff --git a/sv2/framing-sv2/benches/framing.rs b/sv2/framing-sv2/benches/framing.rs
index 02497ad104..5236ad46b6 100644
--- a/sv2/framing-sv2/benches/framing.rs
+++ b/sv2/framing-sv2/benches/framing.rs
@@ -1,7 +1,7 @@
 //! Performance benchmarks for SV2 framing layer operations
 //! Tests both Vec and buffer_pool backends across different message sizes
 
-use binary_sv2::Serialize;
+use binary_sv2::{B016MOwned, Serialize};
 use criterion::{black_box, criterion_group, criterion_main, BenchmarkId, Criterion};
 use framing_sv2::{framing::Sv2Frame, header::Header};
 
@@ -42,12 +42,15 @@ fn frame_from_payload_size(size: usize) -> Vec<u8> {
 
 #[derive(Serialize, Clone)]
 struct Test {
-    _a: Vec<u8>,
+    _a: B016MOwned,
 }
 
 impl Test {
+    // `size` is the total encoded message size: 3-byte B016M length prefix + data
     fn new(size: usize) -> Self {
-        Test { _a: vec![2; size] }
+        Test {
+            _a: vec![2; size - 3].try_into().unwrap(),
+        }
     }
 }
 
@@ -71,7 +74,7 @@ fn bench_serialize(c: &mut Criterion) {
 
     for &size in PAYLOAD_SIZES {
         let frame =
-            Sv2Frame::<Vec<u8>, Slice>::from_bytes(frame_from_payload_size(size).into()).unwrap();
+            Sv2Frame::<Test, Slice>::from_bytes(frame_from_payload_size(size).into()).unwrap();
 
         let mut buf = vec![0u8; frame.encoded_length()];
 
@@ -92,7 +95,7 @@ fn bench_from_bytes(c: &mut Criterion) {
     for &size in PAYLOAD_SIZES {
         let frame = frame_from_payload_size(size);
         group.bench_with_input(BenchmarkId::from_parameter(size), &size, |b, _| {
-            b.iter(|| Sv2Frame::<Vec<u8>, _>::from_bytes(black_box(frame.clone())).unwrap())
+            b.iter(|| Sv2Frame::<Test, _>::from_bytes(black_box(frame.clone())).unwrap())
         });
     }
 
@@ -106,7 +109,7 @@ fn bench_size_hint(c: &mut Criterion) {
     for &size in PAYLOAD_SIZES {
         let frame = frame_from_payload_size(size);
         group.bench_with_input(BenchmarkId::from_parameter(size), &size, |b, _| {
-            b.iter(|| Sv2Frame::<Vec<u8>, Slice>::size_hint(black_box(&frame)))
+            b.iter(|| Sv2Frame::<Test, Slice>::size_hint(black_box(&frame)))
         });
     }
 
diff --git a/sv2/framing-sv2/src/framing.rs b/sv2/framing-sv2/src/framing.rs
index 72507fb1d0..8e9e4948fa 100644
--- a/sv2/framing-sv2/src/framing.rs
+++ b/sv2/framing-sv2/src/framing.rs
@@ -301,7 +301,7 @@ fn update_extension_type(extension_type: u16, channel_msg: bool) -> u16 {
 mod tests {
     use super::*;
     use alloc::vec;
-    use binary_sv2::Serialize;
+    use binary_sv2::{B064KOwned, Serialize};
     use quickcheck::{Arbitrary, Gen};
     use quickcheck_macros::quickcheck;
 
@@ -325,7 +325,7 @@ mod tests {
 
     #[derive(Debug, Clone, PartialEq, Serialize)]
     struct TestMessage {
-        data: Vec<u8>,
+        data: B064KOwned,
     }
 
     impl Arbitrary for TestMessage {
@@ -394,7 +394,9 @@ mod tests {
     #[quickcheck]
     fn prop_sv2frame_serialization_roundtrip_small(data: Vec<u8>) {
         let data: Vec<u8> = data.iter().take(1000).copied().collect();
-        let msg = TestMessage { data };
+        let msg = TestMessage {
+            data: data.try_into().unwrap(),
+        };
         let msg_type = 0x01u8;
         let extension_type = 0x0000u16;