Specifications: The "hollow micro capsule" and "special formulated oil" function to reduce friction between paper surfaces and can be erased with very light force. Material: Eraser: PVC; Ceremony: Recycled paper; Product Size: W 0.9 x D 0.4 x H 2.2 inches (23 x 11 x 55 mm); Art Supplies Shop Dot Com Postcard A: Limited Product!! 1 x Cute Animal Postcard