Special 5-ring design.There is a hook on the top of the bag for easy hanging of the vacuum bag. The bag itself also has a 5-ring design that allows five hooks to be attached. Since the vacuum space saver is transparent, the contents inside can be seen at any time without opening it.Instructions for usePlace each coat on its own hanger and hang it from the vacuum bag's five-ring rack. Hold one side of the sealing edge, slide the zipper firmly several times, and use a vacuum cleaner or hand pump to extract the air from the bag one by one. When the bag mouth no longer shrinks, tighten the screw cap to prevent air from entering.For correct use, some recommendations should be followed:Stored items must be clean, dry, and neatly placed in vacuum bags. Also, avoid items with sharp edges. Push the sealing clamp from one end to the other end of the bag to seal the bag. Place the vacuum cleaner tube over the valve and suck the air out of the bag. After deflating, replace the cap and tighten.packing list:4compression bags (70*145cm)1 hand pump