Ormco uses a "Zoo" naming convention to help identify the size and force of the elastics. Ensure you match the specific animal and weight (ounces) prescribed by your orthodontist. Zoo Pack - Elastics - Peripherals - the Ormco Store

: A common source for buying in bulk (e.g., 1000–5000 pieces) or finding specific sizes like the "Fox" (1/4") or "Rabbit" (3/16").

: Offers high-volume packs (up to 5000 pieces) at lower price points, though shipping times may be longer. Guide to Sizes and Strength

: This is the most reliable source for authentic products. You can browse their full catalog of Zoo Pack elastics by animal name, force (oz), and diameter (inches). Note that registration/login may be required.