diff --git a/session/convert.go b/session/convert.go
index 200e227..d7662b4 100644
--- a/session/convert.go
+++ b/session/convert.go
@@ -207,7 +207,7 @@ func (x *XHeader) FromGRPCMessage(m grpc.Message) error {
 	return nil
 }
 
-func XHeadersToGRPC(xs []*XHeader) (res []*session.XHeader) {
+func XHeadersToGRPC(xs []XHeader) (res []*session.XHeader) {
 	if xs != nil {
 		res = make([]*session.XHeader, 0, len(xs))
 
@@ -219,23 +219,17 @@ func XHeadersToGRPC(xs []*XHeader) (res []*session.XHeader) {
 	return
 }
 
-func XHeadersFromGRPC(xs []*session.XHeader) (res []*XHeader, err error) {
+func XHeadersFromGRPC(xs []*session.XHeader) (res []XHeader, err error) {
 	if xs != nil {
-		res = make([]*XHeader, 0, len(xs))
+		res = make([]XHeader, len(xs))
 
 		for i := range xs {
-			var x *XHeader
-
 			if xs[i] != nil {
-				x = new(XHeader)
-
-				err = x.FromGRPCMessage(xs[i])
+				err = res[i].FromGRPCMessage(xs[i])
 				if err != nil {
 					return
 				}
 			}
-
-			res = append(res, x)
 		}
 	}
 
diff --git a/session/marshal.go b/session/marshal.go
index dbaf367..a57d1a5 100644
--- a/session/marshal.go
+++ b/session/marshal.go
@@ -543,7 +543,7 @@ func (r *RequestMetaHeader) StableMarshal(buf []byte) ([]byte, error) {
 	offset += n
 
 	for i := range r.xHeaders {
-		n, err = proto.NestedStructureMarshal(reqMetaHeaderXHeadersField, buf[offset:], r.xHeaders[i])
+		n, err = proto.NestedStructureMarshal(reqMetaHeaderXHeadersField, buf[offset:], &r.xHeaders[i])
 		if err != nil {
 			return nil, err
 		}
@@ -593,7 +593,7 @@ func (r *RequestMetaHeader) StableSize() (size int) {
 	size += proto.UInt32Size(reqMetaHeaderTTLField, r.ttl)
 
 	for i := range r.xHeaders {
-		size += proto.NestedStructureSize(reqMetaHeaderXHeadersField, r.xHeaders[i])
+		size += proto.NestedStructureSize(reqMetaHeaderXHeadersField, &r.xHeaders[i])
 	}
 
 	size += proto.NestedStructureSize(reqMetaHeaderSessionTokenField, r.sessionToken)
@@ -714,7 +714,7 @@ func (r *ResponseMetaHeader) StableMarshal(buf []byte) ([]byte, error) {
 	offset += n
 
 	for i := range r.xHeaders {
-		n, err = proto.NestedStructureMarshal(respMetaHeaderXHeadersField, buf[offset:], r.xHeaders[i])
+		n, err = proto.NestedStructureMarshal(respMetaHeaderXHeadersField, buf[offset:], &r.xHeaders[i])
 		if err != nil {
 			return nil, err
 		}
@@ -750,7 +750,7 @@ func (r *ResponseMetaHeader) StableSize() (size int) {
 	size += proto.UInt32Size(respMetaHeaderTTLField, r.ttl)
 
 	for i := range r.xHeaders {
-		size += proto.NestedStructureSize(respMetaHeaderXHeadersField, r.xHeaders[i])
+		size += proto.NestedStructureSize(respMetaHeaderXHeadersField, &r.xHeaders[i])
 	}
 
 	size += proto.NestedStructureSize(respMetaHeaderOriginField, r.origin)
diff --git a/session/test/generate.go b/session/test/generate.go
index 537240a..be7cd5f 100644
--- a/session/test/generate.go
+++ b/session/test/generate.go
@@ -217,13 +217,13 @@ func GenerateXHeader(empty bool) *session.XHeader {
 	return m
 }
 
-func GenerateXHeaders(empty bool) []*session.XHeader {
-	var xs []*session.XHeader
+func GenerateXHeaders(empty bool) []session.XHeader {
+	var xs []session.XHeader
 
 	if !empty {
 		xs = append(xs,
-			GenerateXHeader(false),
-			GenerateXHeader(false),
+			*GenerateXHeader(false),
+			*GenerateXHeader(false),
 		)
 	}
 
diff --git a/session/types.go b/session/types.go
index e41b5a9..65f4728 100644
--- a/session/types.go
+++ b/session/types.go
@@ -93,7 +93,7 @@ type RequestMetaHeader struct {
 
 	epoch uint64
 
-	xHeaders []*XHeader
+	xHeaders []XHeader
 
 	sessionToken *Token
 
@@ -117,7 +117,7 @@ type ResponseMetaHeader struct {
 
 	epoch uint64
 
-	xHeaders []*XHeader
+	xHeaders []XHeader
 
 	origin *ResponseMetaHeader
 
@@ -401,7 +401,7 @@ func (r *RequestMetaHeader) SetEpoch(v uint64) {
 	}
 }
 
-func (r *RequestMetaHeader) GetXHeaders() []*XHeader {
+func (r *RequestMetaHeader) GetXHeaders() []XHeader {
 	if r != nil {
 		return r.xHeaders
 	}
@@ -409,7 +409,7 @@ func (r *RequestMetaHeader) GetXHeaders() []*XHeader {
 	return nil
 }
 
-func (r *RequestMetaHeader) SetXHeaders(v []*XHeader) {
+func (r *RequestMetaHeader) SetXHeaders(v []XHeader) {
 	if r != nil {
 		r.xHeaders = v
 	}
@@ -613,7 +613,7 @@ func (r *ResponseMetaHeader) SetEpoch(v uint64) {
 	}
 }
 
-func (r *ResponseMetaHeader) GetXHeaders() []*XHeader {
+func (r *ResponseMetaHeader) GetXHeaders() []XHeader {
 	if r != nil {
 		return r.xHeaders
 	}
@@ -621,7 +621,7 @@ func (r *ResponseMetaHeader) GetXHeaders() []*XHeader {
 	return nil
 }
 
-func (r *ResponseMetaHeader) SetXHeaders(v []*XHeader) {
+func (r *ResponseMetaHeader) SetXHeaders(v []XHeader) {
 	if r != nil {
 		r.xHeaders = v
 	}