The main body fabric uses a 20D nylon thread that meets the Cordura® Brand Fabric standard, using ultra-thin Cordura® nylon with strength against friction, tearing, cutting, etc., and Bonding the company's light shielding film "HEAT BLOCK". This HeatBlock was 50,000 mm or more with water resistance, 99.99% of the light shielding rate, 99.9% or more of UV shielding rates, 40% heat shielding rate, high-durability (Jungle test 35 days carried out). The frame (umbrella bound) is about 250 g (weight excluding bags), comparable to other companies with a parent bone length of 60 cm and the number of parent bones. Moreover, this lightness is not elsewhere in the model automatic opening and closing (stopped in the middle of the shaft and the time of the shaft) model. Inside the umbrella body, there is a pocket that can store umbrella bags, and the umbrella bag itself can be wide and easy to put an umbrella and it is also possible to attach it to a bag or the like using the attached carabiner. . Master-Piece is realized with high balance of umbrella-luminous functions and collapsible umbrellas that block rain and sunlight.