diff --git a/benches/Cargo.lock b/benches/Cargo.lock
index 04eb1c0..f53d82e 100644
--- a/benches/Cargo.lock
+++ b/benches/Cargo.lock
@@ -169,9 +169,9 @@ checksum = "b41b7ea54a0c9d92199de89e20e58d49f02f8e699814ef3fdf266f6f748d15c7"
 
 [[package]]
 name = "base64"
-version = "0.12.1"
+version = "0.12.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "53d1ccbaf7d9ec9537465a97bf19edc1a4e158ecb49fc16178202238c569cc42"
+checksum = "e223af0dc48c96d4f8342ec01a4974f139df863896b316681efd36742f22cc67"
 
 [[package]]
 name = "beef"
@@ -287,6 +287,12 @@ version = "1.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "08c48aae112d48ed9f069b33538ea9e3e90aa263cfa3d1c24309612b1f7472de"
 
+[[package]]
+name = "bytes"
+version = "0.5.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "130aac562c0dd69c56b3b1cc8ffd2e17be31d0b6c25b61c96b76231aa23e39e1"
+
 [[package]]
 name = "cast"
 version = "0.2.3"
@@ -835,7 +841,7 @@ dependencies = [
 [[package]]
 name = "handlebars"
 version = "3.1.1-alpha.0"
-source = "git+https://github.com/sunng87/handlebars-rust#87b25985c4cd1a7babc78ccf28a592a44474c133"
+source = "git+https://github.com/sunng87/handlebars-rust#3a5e50b24e471a1ea49c7a33dcfc89f68db385c4"
 dependencies = [
  "log",
  "pest",
@@ -1362,7 +1368,7 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7b336d94e8e4ce29bf15bba393164629764744c567e8ad306cc1fdd0119967fd"
 dependencies = [
- "base64 0.12.1",
+ "base64 0.12.2",
  "chrono",
  "indexmap",
  "line-wrap",
@@ -1562,10 +1568,11 @@ dependencies = [
 
 [[package]]
 name = "rayon"
-version = "1.3.0"
+version = "1.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "db6ce3297f9c85e16621bb8cca38a06779ffc31bb8184e1be4bed2be4678a098"
+checksum = "62f02856753d04e03e26929f820d0a0a337ebe71f849801eea335d464b349080"
 dependencies = [
+ "autocfg",
  "crossbeam-deque",
  "either",
  "rayon-core",
@@ -1573,9 +1580,9 @@ dependencies = [
 
 [[package]]
 name = "rayon-core"
-version = "1.7.0"
+version = "1.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "08a89b46efaf957e52b18062fb2f4660f8b8a4dde1807ca002690868ef2c85a9"
+checksum = "e92e15d89083484e11353891f1af602cc661426deb9564c298b270c726973280"
 dependencies = [
  "crossbeam-deque",
  "crossbeam-queue",
@@ -1642,7 +1649,7 @@ name = "ructe"
 version = "0.11.5-PRE"
 source = "git+https://github.com/kaj/ructe#0d8ffc1a4e920fc591f19c7fcc126825c3da8745"
 dependencies = [
- "base64 0.12.1",
+ "base64 0.12.2",
  "bytecount",
  "itertools 0.9.0",
  "md5",
@@ -2323,8 +2330,9 @@ dependencies = [
 [[package]]
 name = "yarte"
 version = "0.10.0"
-source = "git+https://github.com/botika/yarte#7210239d274aced48e8f7c3466058784202eb941"
+source = "git+https://github.com/botika/yarte#dbd1a379fc333e995bfc2c055761fea48f566808"
 dependencies = [
+ "bytes",
  "yarte_derive",
  "yarte_helpers",
 ]
@@ -2332,7 +2340,7 @@ dependencies = [
 [[package]]
 name = "yarte_codegen"
 version = "0.10.0"
-source = "git+https://github.com/botika/yarte#7210239d274aced48e8f7c3466058784202eb941"
+source = "git+https://github.com/botika/yarte#dbd1a379fc333e995bfc2c055761fea48f566808"
 dependencies = [
  "proc-macro2 1.0.18",
  "quote 1.0.7",
@@ -2344,7 +2352,7 @@ dependencies = [
 [[package]]
 name = "yarte_derive"
 version = "0.10.0"
-source = "git+https://github.com/botika/yarte#7210239d274aced48e8f7c3466058784202eb941"
+source = "git+https://github.com/botika/yarte#dbd1a379fc333e995bfc2c055761fea48f566808"
 dependencies = [
  "prettyprint",
  "proc-macro2 1.0.18",
@@ -2361,7 +2369,7 @@ dependencies = [
 [[package]]
 name = "yarte_helpers"
 version = "0.10.0"
-source = "git+https://github.com/botika/yarte#7210239d274aced48e8f7c3466058784202eb941"
+source = "git+https://github.com/botika/yarte#dbd1a379fc333e995bfc2c055761fea48f566808"
 dependencies = [
  "dtoa",
  "itoa",
@@ -2373,7 +2381,7 @@ dependencies = [
 [[package]]
 name = "yarte_hir"
 version = "0.10.0"
-source = "git+https://github.com/botika/yarte#7210239d274aced48e8f7c3466058784202eb941"
+source = "git+https://github.com/botika/yarte#dbd1a379fc333e995bfc2c055761fea48f566808"
 dependencies = [
  "derive_more",
  "proc-macro2 1.0.18",
@@ -2388,7 +2396,7 @@ dependencies = [
 [[package]]
 name = "yarte_parser"
 version = "0.10.0"
-source = "git+https://github.com/botika/yarte#7210239d274aced48e8f7c3466058784202eb941"
+source = "git+https://github.com/botika/yarte#dbd1a379fc333e995bfc2c055761fea48f566808"
 dependencies = [
  "annotate-snippets",
  "derive_more",
diff --git a/benches/Cargo.toml b/benches/Cargo.toml
index e883175..6f216ec 100644
--- a/benches/Cargo.toml
+++ b/benches/Cargo.toml
@@ -23,7 +23,7 @@ serde_derive = "1"
 serde_json = "1"
 serde_yaml = "0.8"
 tera = { git = "https://github.com/Keats/tera" }
-yarte = { git = "https://github.com/botika/yarte", features = ["fixed"] }
+yarte = { git = "https://github.com/botika/yarte", features = ["bytes_buff"] }
 
 [build-dependencies]
 ructe = { git = "https://github.com/kaj/ructe" }
diff --git a/benches/benches/all.rs b/benches/benches/all.rs
index 19ce929..d7a6439 100644
--- a/benches/benches/all.rs
+++ b/benches/benches/all.rs
@@ -1,8 +1,8 @@
-use criterion::{criterion_group, criterion_main, Criterion};
 use benches::{
     askama_bench, fomat, handlebars, horrorshow_bench, liquid, markup_bench, maud_bench,
-    ramhorns, ructe, sailfish, std_write, tera, yarte_bench, yarte_fixed,
+    ramhorns, ructe, sailfish, std_write, tera, yarte_bench, yarte_bytes, yarte_fixed,
 };
+use criterion::{criterion_group, criterion_main, Criterion};
 
 fn big_table(c: &mut Criterion) {
     let mut g = c.benchmark_group("Big table");
@@ -18,7 +18,8 @@ fn big_table(c: &mut Criterion) {
     g.bench_function("Sailfish", |b| sailfish::big_table(b, &100));
     g.bench_function("Tera", |b| tera::big_table(b, &100));
     g.bench_function("Yarte", |b| yarte_bench::big_table(b, &100));
-    g.bench_function("Yarte Fixed", |b| yarte_fixed::big_table(b, &100));
+    g.bench_function("Yarte Send", |b| yarte_bytes::big_table(b, &100));
+    g.bench_function("Yarte ?Send", |b| yarte_fixed::big_table(b, &100));
     g.bench_function("write", |b| std_write::big_table(b, &100));
     g.finish();
 }
@@ -37,7 +38,8 @@ fn teams(c: &mut Criterion) {
     g.bench_function("Sailfish", |b| sailfish::teams(b));
     g.bench_function("Tera", |b| tera::teams(b, &0));
     g.bench_function("Yarte", |b| yarte_bench::teams(b));
-    g.bench_function("Yarte Fixed", |b| yarte_fixed::teams(b));
+    g.bench_function("Yarte Send", |b| yarte_bytes::teams(b));
+    g.bench_function("Yarte ?Send", |b| yarte_fixed::teams(b));
     g.bench_function("write", |b| std_write::teams(b, &0));
     g.finish();
 }
diff --git a/benches/src/lib.rs b/benches/src/lib.rs
index fe72951..7cf17ce 100644
--- a/benches/src/lib.rs
+++ b/benches/src/lib.rs
@@ -13,6 +13,7 @@ pub mod sailfish;
 pub mod std_write;
 pub mod tera;
 pub mod yarte_bench;
+pub mod yarte_bytes;
 pub mod yarte_fixed;
 
 include!(concat!(env!("OUT_DIR"), "/templates.rs"));
diff --git a/benches/src/sailfish.rs b/benches/src/sailfish.rs
index cbcb210..79e6ab0 100644
--- a/benches/src/sailfish.rs
+++ b/benches/src/sailfish.rs
@@ -42,7 +42,7 @@ pub fn teams(b: &mut criterion::Bencher<'_>) {
     b.iter(|| {
         let teams = TeamsTemplate {
             year: teams.year,
-            teams: &teams.teams
+            teams: &teams.teams,
         };
         teams.render_once().unwrap()
     });
diff --git a/benches/src/yarte_bytes.rs b/benches/src/yarte_bytes.rs
new file mode 100644
index 0000000..8077630
--- /dev/null
+++ b/benches/src/yarte_bytes.rs
@@ -0,0 +1,58 @@
+use yarte::TemplateBytes;
+
+pub fn big_table(b: &mut criterion::Bencher<'_>, size: &usize) {
+    let mut table = Vec::with_capacity(*size);
+    for _ in 0..*size {
+        let mut inner = Vec::with_capacity(*size);
+        for i in 0..*size {
+            inner.push(i);
+        }
+        table.push(inner);
+    }
+    let t = BigTable { table };
+    b.iter(|| t.call(109915).unwrap());
+}
+
+#[derive(TemplateBytes)]
+#[template(path = "big-table")]
+struct BigTable {
+    table: Vec<Vec<usize>>,
+}
+
+pub fn teams(b: &mut criterion::Bencher<'_>) {
+    let t = Teams {
+        year: 2015,
+        teams: vec![
+            Team {
+                name: "Jiangsu".into(),
+
+                score: 43,
+            },
+            Team {
+                name: "Beijing".into(),
+                score: 27,
+            },
+            Team {
+                name: "Guangzhou".into(),
+                score: 22,
+            },
+            Team {
+                name: "Shandong".into(),
+                score: 12,
+            },
+        ],
+    };
+    b.iter(|| t.call(239).unwrap());
+}
+
+#[derive(TemplateBytes)]
+#[template(path = "teams")]
+struct Teams {
+    year: u16,
+    teams: Vec<Team>,
+}
+
+struct Team {
+    name: String,
+    score: u8,
+}
diff --git a/benches/src/yarte_fixed.rs b/benches/src/yarte_fixed.rs
index 84c14e6..7ffa86a 100644
--- a/benches/src/yarte_fixed.rs
+++ b/benches/src/yarte_fixed.rs
@@ -1,3 +1,5 @@
+use criterion::black_box;
+use std::mem::MaybeUninit;
 use yarte::TemplateFixed;
 
 pub fn big_table(b: &mut criterion::Bencher<'_>, size: &usize) {
@@ -9,26 +11,20 @@ pub fn big_table(b: &mut criterion::Bencher<'_>, size: &usize) {
         }
         table.push(inner);
     }
-    let ctx = BigTable { table };
+    let t = BigTable { table };
     b.iter(|| {
-        let mut buf = String::with_capacity(109915);
-        unsafe {
-            buf.as_mut_vec().set_len(109915);
-            let b = ctx.call(buf.as_bytes_mut()).unwrap();
-            buf.as_mut_vec().set_len(b);
-        }
-        buf
+        black_box(t.call(&mut [MaybeUninit::uninit(); 109915]).unwrap());
     });
 }
 
 #[derive(TemplateFixed)]
-#[template(path = "big-table.hbs")]
+#[template(path = "big-table")]
 struct BigTable {
     table: Vec<Vec<usize>>,
 }
 
 pub fn teams(b: &mut criterion::Bencher<'_>) {
-    let teams = Teams {
+    let t = Teams {
         year: 2015,
         teams: vec![
             Team {
@@ -51,18 +47,12 @@ pub fn teams(b: &mut criterion::Bencher<'_>) {
         ],
     };
     b.iter(|| {
-        let mut buf = String::with_capacity(239);
-        unsafe {
-            buf.as_mut_vec().set_len(239);
-            let b = teams.call(buf.as_bytes_mut()).unwrap();
-            buf.as_mut_vec().set_len(b);
-        }
-        buf
+        black_box(t.call(&mut [MaybeUninit::uninit(); 239]).unwrap());
     });
 }
 
 #[derive(TemplateFixed)]
-#[template(path = "teams.hbs")]
+#[template(path = "teams")]
 struct Teams {
     year: u16,
     teams: Vec<Team>,
diff --git a/benches/templates/big-table.hbs b/benches/templates/big-table.hbs
index 6255b49..695a071 100644
--- a/benches/templates/big-table.hbs
+++ b/benches/templates/big-table.hbs
@@ -1 +1 @@
-<table>{{#each table}}<tr>{{#each this}}<td>{{ this }}</td>{{/each}}</tr>{{/each}}</table>
+<table>{{#each table}}<tr>{{#each this}}<td>{{ this }}</td>{{/each }}</tr>{{/each }}</table>
diff --git a/benches/templates/teams.hbs b/benches/templates/teams.hbs
index 5af2727..5bc3f3b 100644
--- a/benches/templates/teams.hbs
+++ b/benches/templates/teams.hbs
@@ -1 +1 @@
-<html><head><title>{{ year }}</title></head><body><h1>CSL {{ year }}</h1><ul>{{#each teams }}<li class="{{#if index0 == 0 }}champion{{/if}}"><b>{{ name }}</b>: {{ score }}</li>{{/each}}</ul></body></html>
+<html><head><title>{{ year }}</title></head><body><h1>CSL {{ year }}</h1><ul>{{#each teams }}<li class="{{#if first }}champion{{/if }}"><b>{{ name }}</b>: {{ score }}</li>{{/each }}</ul></body></html>