The case comes with 12 packs of replacement cartridges packaged for retail resale.  Each pack contains 2 cartridges.

ZOS HALO comes with one cartridge. We recommend purchasing replacement cartridges to keep on hand. Each cartridge lasts about 5-15 bottles with proper use. Cartridges are filled with a non-toxic material that absorbs all the oxygen and preserves your opened bottles of wine for up to 2 months. ZOS Halo sold separately.

Included:

• 2 ZOS Replacement Cartridges

Product Specs:

• Weight – 0.5 oz (14 grams)
• Size - .7" X 3.1" (17.7 mm X 78.7 mm)
• Material – plastic