Freedom Trail hydration pack
Bought this yesterday for use when doing my group walks on a Sunday and used ot for the first time today. I have a bigger rucksack with hydration pack that i normally use if i need to carry clothing etc too but thought a smaller, one would do for my walks in nice weather. The bladder holds 1 litre and a pocket on the front was big enough to hold my phone, car keys and some cash.
If you carry more than this, go for a bigger rucksack but it did what i wanted it to so I'm happy with it. A good buy.