What are the platypus bottle like. I have looked at them in the past.Sigg 1 litre in insulated pouch in rucksack or belt rig
Half litre US pilots flask in urban carry haversack
Half litre Oxfam collapsible flask in jacket pocket
Two empty litre Platypus bottles in rucksack filled at overnight camp or reserves in very hot conditions
Sawyer mini filter with its squeezy bottle also in rucksack
One litre plastic bottle in campervan fridge
I get migraines if dehydrated. Should be ok if I keep this lot filled.