These extension cord organizers are made of high-quality materials. The straps are made of heavy-duty nylon, which is strong and durable. The buckle is made of durable plastic, which is not easy to break. The hooks are made of Stainless steel metal, which is strong and durable. The length of the organizer is L: 22.5cm/8.86inches and M: 19cm/7.5inches, which is long enough to hold a lot of extension cords. The width of the organizer is 4cm/1.57in, which is enough carrying capacity to hold a lot of extension cords. The organizer is easy to use. You can just wrap the extension cords around the organizer, and then use the hooks to hang the organizer on the wall. The organizer is also easy to store. You can just fold the organizer up, and then put it in a closet or under the bed.