diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4c17a928e..716779c78 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -33,7 +33,8 @@ Please also have a look at our
 - Make all non-private properties `@internal` (#886)
 - Use more native type declarations and strict mode
   (#641, #772, #774, #778, #804, #841, #873, #875, #891, #922, #923, #933, #958,
-  #964, #967, #1000, #1044, #1134, #1136, #1137, #1139, #1140, #1141, #1145)
+  #964, #967, #1000, #1044, #1134, #1136, #1137, #1139, #1140, #1141, #1145,
+  #1162)
 - Add visibility to all class/interface constants (#469)
 
 ### Deprecated
diff --git a/src/Value/Size.php b/src/Value/Size.php
index 9939160b7..bbf91eb5e 100644
--- a/src/Value/Size.php
+++ b/src/Value/Size.php
@@ -17,7 +17,7 @@ class Size extends PrimitiveValue
     /**
      * vh/vw/vm(ax)/vmin/rem are absolute insofar as they don’t scale to the immediate parent (only the viewport)
      *
-     * @var array<int, string>
+     * @var list<non-empty-string>
      */
     private const ABSOLUTE_SIZE_UNITS = [
         'px',
@@ -38,17 +38,17 @@ class Size extends PrimitiveValue
     ];
 
     /**
-     * @var array<int, string>
+     * @var list<non-empty-string>
      */
     private const RELATIVE_SIZE_UNITS = ['%', 'em', 'ex', 'ch', 'fr'];
 
     /**
-     * @var array<int, string>
+     * @var list<non-empty-string>
      */
     private const NON_SIZE_UNITS = ['deg', 'grad', 'rad', 's', 'ms', 'turn', 'Hz', 'kHz'];
 
     /**
-     * @var array<int, array<string, string>>|null
+     * @var array<int<1, max>, array<lowercase-string, non-empty-string>>|null
      */
     private static $SIZE_UNITS = null;
 
@@ -69,11 +69,9 @@ class Size extends PrimitiveValue
 
     /**
      * @param float|int|string $size
-     * @param string|null $unit
-     * @param bool $isColorComponent
      * @param int<0, max> $lineNumber
      */
-    public function __construct($size, $unit = null, $isColorComponent = false, int $lineNumber = 0)
+    public function __construct($size, ?string $unit = null, bool $isColorComponent = false, int $lineNumber = 0)
     {
         parent::__construct($lineNumber);
         $this->size = (float) $size;
@@ -82,14 +80,12 @@ public function __construct($size, $unit = null, $isColorComponent = false, int
     }
 
     /**
-     * @param bool $isColorComponent
-     *
      * @throws UnexpectedEOFException
      * @throws UnexpectedTokenException
      *
      * @internal since V8.8.0
      */
-    public static function parse(ParserState $parserState, $isColorComponent = false): Size
+    public static function parse(ParserState $parserState, bool $isColorComponent = false): Size
     {
         $size = '';
         if ($parserState->comes('-')) {
@@ -125,9 +121,9 @@ public static function parse(ParserState $parserState, $isColorComponent = false
     }
 
     /**
-     * @return array<int, array<string, string>>
+     * @return array<int<1, max>, array<lowercase-string, non-empty-string>>
      */
-    private static function getSizeUnits()
+    private static function getSizeUnits(): array
     {
         if (!\is_array(self::$SIZE_UNITS)) {
             self::$SIZE_UNITS = [];
@@ -146,18 +142,12 @@ private static function getSizeUnits()
         return self::$SIZE_UNITS;
     }
 
-    /**
-     * @param string $unit
-     */
-    public function setUnit($unit): void
+    public function setUnit(string $unit): void
     {
         $this->unit = $unit;
     }
 
-    /**
-     * @return string|null
-     */
-    public function getUnit()
+    public function getUnit(): ?string
     {
         return $this->unit;
     }
@@ -170,18 +160,12 @@ public function setSize($size): void
         $this->size = (float) $size;
     }
 
-    /**
-     * @return float
-     */
-    public function getSize()
+    public function getSize(): float
     {
         return $this->size;
     }
 
-    /**
-     * @return bool
-     */
-    public function isColorComponent()
+    public function isColorComponent(): bool
     {
         return $this->isColorComponent;
     }