i need some help pls

[GlocK]

I need to do that (see picture)

[Radu]

in the function getProductsProperties from classes/Product.php
you can get the features like
after:

foreach ($query_result AS $row) {

add:

$features = Product::getFrontFeaturesStatic(intval($cookie->id_lang), $row['id_product']);
$row['features'] = $features;

than in the tpl file of product-list you display them

it's more than this as the problem is more complex in terms of optimisation but you have a good starting point now.