The medals are made from shiny zinc alloy material and material is hard, wear resistant, anti oxidation and corrosion resistant, which can be stored and preserved for a long time. The medal measures 2.56" x 2.56" x 0.16" and fits perfectly around your neck! Medals support customization, logo process is The medals for the winners, it is nice to see their hard work paying off. Small items but big value. For school sports meeting, basketball, football, swimming, track and field, boxing, bicycling and weight lifting and all kinds of sports events, as celebration souvenir or as a prize for the best employee. The prices for 7000pcs or over are based on ocean shipments.