Practical silicone bottle, light and easy to transport, with a capacity of half a liter of water. For ease of transport, it can be rolled up (when empty) to occupy a smaller volume.
US military style water flask with cover, capacity approx 1,9 L
ARMY CANTIL MILITAR SURPLUS CHECO M60
Aluminum canteen with 0.9 liter capacity and lunch box, for your adventures in the field, hunters, scouts, fishermen, softair, etc.