Here are the specs
CAMELBAK THERMOBAK 3 LITER
With the expanded hydration capabilities of the ThermoBak 3 Liter, you'll have the flexibility to venture further from a water supply and go longer before refilling. The ergo-nomic harness and low-profile design integrate easily with other extended mission gear, such as a load-bearing system or web harness platform. And the closed cell foam insulation, combined with neoprene tube insulation, will keep your water supply cold for hours.
KEY FEATURES:
Exterior fillport, with ergonomic handle, makes filling on the go fast and easy
Quick release shoulder straps stow-away in back panel, for easy loading inside a larger ruck
HydroLock shuts off flow for added security during transport
Includes sternum strap for added stability
STANDARD TECHNICAL FEATURES:
HydroLock(tm): Low profile HydroLock shuts off flow for added security during transport.
Big Bite(tm) Valve: Made from 100% medical grade silicone, CamelBak's patented one-piece design is simple to use and clean. Just bite and sip.
Thermobak 3L CBK-20111/21/31
Capacity: 105 oz
Dimensons: 8.5in x .5in x 18in
Volume: 122 cu in.
Weight (Empty): 14.3 oz
Weight (Filled): 5lbs 4.3oz
Tube Cover: Our neoprene insulated tube cover keeps water cool, so your first sip is as cool as the last.
Polyurethane Reservoir: CamelBak's polyurethane reservoir delivers tremendous burst strength, and flexibility, as well as being able to handle temperature extremes from Everest to the Sahara.
Screw Cap Closure: Easy-to-fill, leak-proof performance. Large enough to add ice cubes - a must for hot weather.
Reservoir Insulation: New for 2001, closed cell foam keeps liquid colder, longer. And because it won't absorb water, it doesn't absorb perspiration.