This smiley hook is made of high-quality plastic, non-toxic, environmentally friendly and durable. This holder is sturdy and reusable. Simply choose a smooth surface and clean it, stick suction cups on and pull the hook down vertically. No tool needed! Unlock it, lift the tiny tip and pull out, no need to worry about the suction cups will scratch your window or damage surfaces. The suction holder is sturdy and reusable.