I have a
Camelbak Mule which comes with a 100 oz bladder. I found it ideal for EDC gear (maxi-kit), but not much else. If all I needed was the 10 Essentials (water, FAK, fire making kit, trash bags et al) it was okay, but not big enough for additional clothing other than a pair of socks and maybe a long underwear top. Recently I found a
Camelbak Rim Runner which has the same 100 oz bladder but a lot more room for additional bulky items.
Rim Runner Reviews