diff --git a/examples/axum-fork/src/routing/url_params.rs b/examples/axum-fork/src/routing/url_params.rs
index ae35fb82..8291f0d0 100644
--- a/examples/axum-fork/src/routing/url_params.rs
+++ b/examples/axum-fork/src/routing/url_params.rs
@@ -9,7 +9,7 @@ pub(crate) enum UrlParams {
     InvalidUtf8InPathParam { key: Arc<str> },
 }
 
-pub(super) fn insert_url_params(extensions: &mut Extensions, params: &[Parameter]) {
+pub(super) fn insert_url_params(extensions: &mut Extensions, params: &[Parameter<'_>]) {
     let current_params = extensions.get_mut();
 
     if let Some(UrlParams::InvalidUtf8InPathParam { .. }) = current_params {
@@ -21,7 +21,7 @@ pub(super) fn insert_url_params(extensions: &mut Extensions, params: &[Parameter
         .iter()
         .map(|param| {
             (
-                String::from_utf8_lossy(&param.key),
+                String::from_utf8_lossy(param.key),
                 String::from_utf8_lossy(&param.value),
             )
         })
diff --git a/examples/hyper/src/main.rs b/examples/hyper/src/main.rs
index 561c2abf..e8aff3f5 100644
--- a/examples/hyper/src/main.rs
+++ b/examples/hyper/src/main.rs
@@ -82,7 +82,7 @@ async fn main() -> Result<(), anyhow::Error> {
 
 async fn index_route(
     _: &'_ str,
-    _: &'_ [Parameter],
+    _: &'_ [Parameter<'_>],
 ) -> Result<Response<BoxBody<Bytes, Infallible>>, anyhow::Error> {
     let json = serde_json::json!({
         "hello": "world"
@@ -98,7 +98,7 @@ async fn index_route(
 
 async fn hello_route(
     _: &'_ str,
-    parameters: &'_ [Parameter],
+    parameters: &'_ [Parameter<'_>],
 ) -> Result<Response<BoxBody<Bytes, Infallible>>, anyhow::Error> {
     let name = String::from_utf8_lossy(&parameters[0].value);
     let json = serde_json::json!({
@@ -115,7 +115,7 @@ async fn hello_route(
 
 async fn not_found(
     path: &'_ str,
-    _: &'_ [Parameter],
+    _: &'_ [Parameter<'_>],
 ) -> Result<Response<BoxBody<Bytes, Infallible>>, anyhow::Error> {
     let json = serde_json::json!({
         "error": "route_not_found",
diff --git a/src/router.rs b/src/router.rs
index 57601c66..bcb25a1d 100644
--- a/src/router.rs
+++ b/src/router.rs
@@ -17,12 +17,12 @@ use std::{
 #[derive(Debug, Eq, PartialEq)]
 pub struct Match<'a, T> {
     pub data: &'a NodeData<T>,
-    pub parameters: Vec<Parameter>,
+    pub parameters: Vec<Parameter<'a>>,
 }
 
 #[derive(Clone, Debug, Eq, PartialEq)]
-pub struct Parameter {
-    pub key: Vec<u8>,
+pub struct Parameter<'a> {
+    pub key: &'a [u8],
     pub value: Vec<u8>,
 }
 
@@ -167,7 +167,7 @@ impl<T> Router<T> {
                 };
 
                 Ok(Parameter {
-                    key: raw.key.to_vec(),
+                    key: raw.key,
                     value,
                 })
             })
diff --git a/tests/common.rs b/tests/common.rs
index 92ba0ee3..10a5666e 100644
--- a/tests/common.rs
+++ b/tests/common.rs
@@ -26,7 +26,7 @@ macro_rules! assert_router_matches {
                 $(
                     $( wayfind::router::Parameter {
                         #[allow(clippy::string_lit_as_bytes)]
-                        key: $param_key.as_bytes().to_vec(),
+                        key: $param_key.as_bytes(),
 
                         #[allow(clippy::string_lit_as_bytes)]
                         value: $param_value.as_bytes().to_vec(),
@@ -41,10 +41,10 @@ macro_rules! assert_router_matches {
     };
 }
 
-pub struct ExpectedMatch<T> {
+pub struct ExpectedMatch<'a, T> {
     pub path: Arc<str>,
     pub value: T,
-    pub params: Vec<Parameter>,
+    pub params: Vec<Parameter<'a>>,
 }
 
 pub fn assert_router_match<'a, T: PartialEq + Debug>(