Amazon.com: Glass Pen Window Marker: Liquid Chalk Markers for Glass, Car Marker or Mirror Pen with Washable Paint - Car Windows, Storefront Window, Wedding, Parade, Party & Holiday Decorations (White, Fine Tip) :
Amazon.com : White Jumbo Chalk Markers - 15mm Window Markers | Pack of 4 White Pens - Use on Cars, Chalkboard, Whiteboard, Blackboard, Glass, Bistro | Loved by Teachers, Artists, Businesses : Arts, Crafts & Sewing