What camelbak should i get that holds 100 oz(3 liters)with a little cargo space that can expand for more room?

Question

my friend said she got one that is about as small as the camelbak MULE but has some sort of clip thing that can make it the size of a regular backpack. does anyone know about something like this? or any type of small camelback that can be made a little bigger?

Answer 1

Look at the Gregory brand hydration systems. They are lightweight and have plenty of storage room. My husband uses one for all of his long (20+ mile) runs.