Its right in the description....
Multicam Canteen/ General Purpose Pouch
This item is brand new. Please check pictures for a better description. Let me know if you have any questions, thank you.
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Canteen Not Included!!!!
Holds Military 1 Quart Canteen & Canteen Cup
Can be Used to Hold Mags & Other Accessories
Bungee Cord Cinch Straps for Securing Gear
(2) Small Side Pockets for Purification Tablets or First Aid Bandage
Quick Release Buckle
Grommet Drain Hole
MOLLE Straps Attach to Any Bag, Vest, or Pouch
Genuine Multicam Pattern
If you want that style of canteen you can go find one probably cheaper at a local surplus store, they should have tons of them.
I would recommend a camel back or similar system over the canteen though.