X-Treme Rubber Bands, Size 117b, 0.08" Gauge, Lime Green, 1 Lb Box, 200/box Latex-free rubber bands made from a type of synthetic rubber called EPDM (Ethylene Propylene Diene Monomer). EPDM gives the bands outstanding properties that make it resilient to UV, heat, ozone, weather and age. Ideal for a wide range of applications. Recommended for home, office and recreational use.