Mariusz Ostrowski is the author of Subway Icons Set. These Icons are delivered in PNG, SVG, XALM, PSD, CSH, SKETCH, PDF, AI and EPS format and optimized for Apple Watch Menu Icons, iOS (30px/@1x and 60px/@2x), iOS 7/8 Style (30px/@1x, 60px/@2x, 90px/@3x, iOS 8 PDF), Windows Phone (48px and 72px), Windows 8 (40px) and BlackBerry 10 (96px, 81px, 71px and 61px). don’t forget that they are free now.