Summit Hydration Reservoir Bladder, 2L just £1 online at Tesco Direct
Please drink responsibly and frequently, always remember to sterilise your water and that thirst is a poor indicator of hydration.
Note: these are the old style versions with the stiff push/pull shut-off valve that some find fiddly to operate, the newer model from the likes of Trespass for £8.49 has a much nicer to use thumb operated tap similar to the one found on the Wilko homebrew siphoning kit
Please drink responsibly and frequently, always remember to sterilise your water and that thirst is a poor indicator of hydration.
Note: these are the old style versions with the stiff push/pull shut-off valve that some find fiddly to operate, the newer model from the likes of Trespass for £8.49 has a much nicer to use thumb operated tap similar to the one found on the Wilko homebrew siphoning kit