shinfin fins are easy to pack as they stack neatly in your bag. They are not bulky like regular foot flippers.
Regular foot fins are bulky and longer because of their foot pockets. That makes them much heavier too. So they are heavy and bulky to pack. They take up a lot of room in your bag.
shinfin fins overcome these problems because they have no bulky foot pockets. So they are are much flatter and lighter than foot flippers. They also stack neatly on top of each other in your bag. So they fit much more easily and neatly into your bag. This means that, when you travel with them, you can keep your bag size and weight to a minimum.
Now you can have happy lightweight travelling with your easy to pack fins!