Umbrella Lock design (6P)

If it wasn't for the rainy days, I don't think everyone would have the habit of carrying umbrellas, and rainy days can make people forget where they fall, but this umbrella with a lock design is different, it is called Shacklie, created by Mac Funamizu, it is kind of like handcuffs, and you can lock it to the railings or other places. So you don't lose your umbrella so easily.