I went to Cool Magic SHU's in Jiyugaoka today! They serve a lot of kinds of functional umbrellas from the first floor to the fourth floor! I found the one weigh only 98grams at the first floor! It has a UV protection so you can use it everyday!
PRICE: Flower light carbon: 3000yen
Flower Premium five stars: 3000yen
Cool Magic SHU'S
1-9-1, Jiyugaoka, Meguro-ku, Tokyo-to