It is a pin badge with a synthesizer design. This is a set of 4 types. This is a great set for those who are not sure which type to get! Since the price is usually for 3 bottles, 1 bottle is free and it is a good deal. The dot pattern has a three-dimensional effect unique to rubber. It's a cute pin badge. As an accessory to bags and bowls. It may also be ♪ a good gift for synth lovers < Synth Rubber Pin Badge Set of 4 > Contents Synth Rubber Pin Badge 1 each 01：FM SYNTHESIZER 02：ANALOG SYNTHESIZER 03：ANALOG SYNTHESIZER 04：PCM SYNTHESIZER <Synth Rubber Pin Badge Specification> Material: PVC, Steel Size: Approx. 41×20×16mm * The cross-section may be distorted during the rubber cutting process. Please note that this is a characteristic of the material.