v1t3man

$brend_val = '';
$ves_val = '';
if ((string)$product->get_attribute('brend') !== '') {
$brend_val = '<p class="attribute-val">'. '<span class="attribute-val">Бренд: </span>' . $product->get_attribute('brend') .'</p>';
}
if ((string)$product->get_attribute('ves') !== '') {
$ves_val  = '<p class="attribute-val">'. '<span class="attribute-val">Вес: </span>'  . $product->get_attribute('ves') .'</p>';
}

if ( $brend_val !== '' || $ves_val !== '' ) {
echo '<div class="attribute-val">' 
.  $brend_val  
.   $ves_val .
'</div>';
}