C-1 Cool Gray No.1 クールグレイ No.1 A gray that gives a cool impression. Sketch ¥380 (Tax not included)・・・・・・Shop Ciao ¥250 (Tax not included)・・・・・・・Shop Classic ¥380 (Tax not included)・・・・・Shop Refill ink ¥380 (Tax not included)・・・Shop