Bartelli Vacuum Food Sealer Valve System - For use with any bag or foods original packaging. Reusable bundle includes Pump, Seals, Valves, and Unnecessary Bags Use on any bag: use on pre-packaged bags straight from the grocery store to store away and keep food fresh! Bundled with everything you need: includes 5 clips 5 valves 5 bags 1 pump and Instruction Manual Easy to use: Separate valve halves, Place bottom valve inside bag, Rejoin valve top to bottom, Seal bag, Pump out air Small, Reusable and Inexpensive: Store away easily and reuse time and time again without the need for expensive vacuum machines or proprietary bags. Keeps Food Fresh Longer, Prevents Freezer Burn, Preserves Natural Flavors, Marinates Food Faster