When sitting and welding, the hole opens immediately. Other than that, there is no defect. Because the collar sleeve closes with rubber, the wrist does not weld burn. Because inside can be done with light clothing such as underwear, the heat is relieved.
I bought L because it is slightly thicker about 170 cm. There are enough widths to fit on the back, but it is still a little dubboid. The length was up to the knee. Because the length of the arm is short, the sleeves are slightly longer. The difference between S and L was 8 cm in chest and 6 cm in dress length, so I thought that S was also good. Because there is no pocket, it is inconvenient when using several small tools.