Bladder includes tube and mouthpiece
Approximate water capacity is 1.3 liters
Includes Neoprene case with insulated lining
The Great Lakes 550 fits inside the rear compartments of M-ROCK backpacks the Zion & McKinley
Includes a handle and an adjustable shoulder strap
Five Year Manufacturer's Warranty
M-ROCK offers protection against manufacturer defects in workmanship and materials for five years with intended use of the product. Defects are extremely rare but If you are unlucky and have a claim the first step is to email images of the defects and proof of purchase to
mrock@m-rock.com and we will repair or replace the bag at our cost.
Care Guide-Lines
To operate, pull valve with your hand or teeth. Gently bite and suck. Liquid will flow immediately. Push it to close to completely eliminate the flow. The shut-off mechanism acts as a safety valve, making sure that no water gets through the bite-activated valve.
To clean the bladder, fill it with warm water, add a teaspoon of chlorine bleach and soak overnight. Drain the chlorine mixture out and rinse the bladder and tube several times with warm water.
If you find the odors and flavors from various drinks have a bit too much hang time, you can easily eliminate them. Again, start with the warm water rinse. Then, add a quarter cup of baking soda to three quarters of a cup of water, pour the mixture into the bladder and shake well. Here's the fun part: holding the bladder away from your face, add a quarter cup of lemon juice. The reaction will cause gas to build up, so be sure the bladder is able to release pressure. Wait 10 minutes for the bubbling to subside, squeeze out as much air as possible, close the cap and sit still. After 20 minutes, rinse out with hot water, and you will have a non-smelly bladder.
Warning: Do not put the bladder and tube in dishwasher.
