MATERIAL: Cute retractable erasers are made from Rubber and plastic. PACKAGE: 1 set of 4 PCS EASY TO USE: 1.Perfect for home, school and office use. 2.Creative writing stationary erasers with pen style are attractive for kids and students. 3.After using the eraser stick, you can press the top of the eraser and push the eraser back at the same time. 4.If you unintentionally push out the all eraser stick, please pull out the top lid and gently press the stick from the top, then cover the lid to continue to use. NOTICE: Not suitable for children under 3 years old.