NSI Materials Group Felt Student Eraser has been made for classrooms across the USA and Canada for over 30 years. Sized perfect for students of all ages, our 2"x2" Student Eraser can be used on dry erase, wet erase, and traditional chalk boards. They are non marking and made from USA MADE FELT! Over the past 30 years we strive to make safe and long lasting traditional erasers. As one of the last Eraser manufacturers left in the USA there will not disappoint.