diff --git a/src/types/photo_size.rs b/src/types/photo_size.rs
index 5efda500..64ddfac7 100644
--- a/src/types/photo_size.rs
+++ b/src/types/photo_size.rs
@@ -26,6 +26,53 @@ pub struct PhotoSize {
     pub file_size: Option<u32>,
 }
 
+impl PhotoSize {
+    pub fn new<S1, S2>(file_id: S1, file_unique_id: S2, width: i32, height: i32) -> Self
+    where
+        S1: Into<String>,
+        S2: Into<String>,
+    {
+        Self {
+            file_id: file_id.into(),
+            file_unique_id: file_unique_id.into(),
+            width,
+            height,
+            file_size: None,
+        }
+    }
+
+    pub fn file_id<S>(mut self, val: S) -> Self
+    where
+        S: Into<String>,
+    {
+        self.file_id = val.into();
+        self
+    }
+
+    pub fn file_unique_id<S>(mut self, val: S) -> Self
+    where
+        S: Into<String>,
+    {
+        self.file_unique_id = val.into();
+        self
+    }
+
+    pub fn width(mut self, val: i32) -> Self {
+        self.width = val;
+        self
+    }
+
+    pub fn height(mut self, val: i32) -> Self {
+        self.height = val;
+        self
+    }
+
+    pub fn file_size(mut self, val: u32) -> Self {
+        self.file_size = Some(val);
+        self
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;