The first installment of USEDo's new project "USEDoPRO", which creates what professionals in various jobs want. After asking the hand-painting group ``WHW!'' about the problems they face when painting, they came up with the ideal piece. The fabric is 100% cotton chambray. "WHW!" is embroidered on the left sleeve. We have created a work shirt that everyone can use conveniently, and it looks great whether you wear it up or close the front.