Create vibrant marks on windows, mirrors & dark surfaces with Expo Neon Low Odor Dry Erase Markers. The neon window markers feature a specially designed, low-odor ink that can be used on both black & white dry erase surfaces as well as windows. The ink goes on bright yet also erases easily. Use your colorful Expo dry erase markers to leave notes & give exciting lessons. Marker Ink Type: Dry Erase; Marker Tip Type: Bullet; Marker Tip Size (text): Broad; Marker Color(s): Assorted.