The standard and most common type of loops. In each corner of the big bag is one loop. The bag can be lifted from the top by a forklift that has to catch all four loops. For the manipulation of a 4-loop bag, you generally need a forklift driver and a manipulator that helps a fork to pass through a loop. Loop height starting from the top of the bag (free loop height) depends on customer requirements. Most commonly, the free part of the loop is 25cm or 30cm but can also be 60cm so all four loops can be catched with one single hook.