all02004 - alliance x-treme rubber bands xtreme latex-free rubber bands made from a type of synthetic rubber called epdm (ethylene propylene diene monomer). this type of rubber gives the bands outstanding properties that make it resilient to uv, heat, ozone, weather and age. each 7" x 1/8" band has built-in longevity and offers a wide range of applications for home, office and recreational use.