Maybe you just want to keep a small water bottle at hand and top it up during the day, the Sea to Summit Pack Tap 4L is the perfect solution for this. Keep it in your rucksack and fill your bottle as required, your Pack Tap will shrink down to almost nothing once it's empty.
It's completely tasteless, safe to use around food and easy to use as you can just hang one up on a tree to set up a water station. You won’t have to worry about water leaking everywhere as it contains a self-shutting valve for one-handed use, plus the plastic/foil bladder is tough and won’t puncture easily.
So, whether you use them for water or for other cheeky beverages, you can’t go wrong with this little space-saving pack tap.