In life, we often find some scavengers or we ourselves have to flatten empty plastic bottles to reduce the volume of storage. However, most plastic bottles have a round cross-section and their own tension is very large. It's not an easy thing to want to step on a flat surface. Now that the plastic bottle was found, six symmetrical grooves were made on the bottle body. How does it feel? Certainly easier to tread than ordinary plastic bottles, of course, the direction of the groove can also be horizontal. Plastic bottle companies can give full play to their imagination.