How to check the weight of product in cart based on meta_key?

I am looking for a solution to check the weight in the cart based on meta. for example, it prints: :

• 5kg in your basket is Cold and Hot
• 2.5kg in your basket is other

I use the following loop to check the meta_key:

$category_check = false;
foreach ( WC()->cart->get_cart() as $cart_item_key => $cart_item ) {
    $product = $cart_item['data'];
    if ( $cold = $product->get_meta('cold_product') or $hot= $product->get_meta( 'hot_product' ) ) {
    $category_check = true;
    break;
    }
}

Then after checking products with a special meta, I want to calculate the weight.

 if (category_check ) {
        echo 'your basket include:';

     // I stock in this stage 
     // Show total weight of product $cold and $hot
    
}

Would you please give me some tips regarding create the second loop? In fact, I need a new variation like $new_weight to hold the total weight of products that is both $cold and $hot.

Answer

Ok, I found the answer and I put it here to share with others:

$cat_check = false;
$w= 0;
foreach ( WC()->cart->get_cart() as $cart_item_key => $cart_item ) {
    $product = $cart_item['data'];
    $weight=$product->get_weight() * $cart_item['quantity'];
       if ( $cold = $product->get_meta('cold_product') or $coldsummer = $product->get_meta( 'cold_product_summer' ) ) {
       $cat_check = true;
       $w = $w + $weight;
       }                
}  

Then I use the following part to print it:

if ($cat_check) {
   echo '<p>your basket include: ' . $w . ' kg special products.</p>';
}