Product : STEM-Themed Soft Enamel Pins Weight: 3.5g Color : Gold Features dopamine molecule, periodic table, π symbol with sleek black-gold design. Ideal for science/math lovers to decorate bags/jackets with witty, intellectual, and stylish charm.                                                

Product : Science-Themed Soft Enamel Pins Weight: 5.5g Color : Gold Features periodic table, atom, molecular structure, π designs in sleek black & rose gold. Ideal for science/math lovers to decorate bags/jackets with witty, intellectual charm.