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Details

  • Wide-mouth opening with Slidelock™ closure is easy to fill and locks securely
  • Low-profile design rides flat in your pack
  • BPA-free polyethylene with silver-ion antimicrobial finish offers clean, taste-free drinking
  • Quick-release hose and shutoff valve make drinking and refilling easy

Made in USA.

View all Platypus Reservoirs

REI membership

Specs

Best Use Multisport
Reservoir Capacity (fl. oz) 101
Bite Valve Shut-Off Switch Yes
Wide-Mouth Opening Yes
Quick Disconnect Tubing Yes
Material(s) Polyethylene
Dimensions 17.2 x 8.8 inches
BPA Free Yes
Weight 6 ounces
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Will this work with the REI Crestrail 70 Pack?

Asked by: PrestonEsco
The Big Zip LP 3 Liter Reservoir will fit in your REI Crestrail 70 Pack.
Answered by: REIservice
Date published: 2016-06-23

I recently bought this and have used it for a long hike. How do I clean the hose?

Asked by: LBP
The Platypus Cleaning Kit is the best choice for cleaning your Big Zip LP Reservoir. The kit comes with a brush for scrubbing your hose. https://www.rei.com/product/767114/platypus-cleaning-kit Platypus will have step-by-step cleaning instructions on their site.
Answered by: REIservice
Date published: 2017-04-07

I have both an Osprey Exos 48 and REI flash 18.  I know it will fit the Osprey but will it fit the REI flash 18 if I only fill it 1.5L to 2L full?

Asked by: ongnoimay
Yes, you can carry this reservoir in a Flash 18. By not filling it full, you will keep the weight down, which will make it easier to carry in the stripped down Flash 18.
Answered by: REIservice
Date published: 2015-09-20

What is the tube made of?

Asked by: GaryB
The reservoir tube is made from polyurethane. The bite valve is made from silicone.
Answered by: REIservice
Date published: 2015-09-20

Will the 3 litre fit in the Osprey Atmos 65 AG ?

Asked by: Ddub59
Yes, this 3-liter reservoir will fit nicely into the hydration sleeve.
Answered by: REIservice
Date published: 2017-03-01

How easy is it to disconnect the hose and use the bag as water transport? I have an 80 L backpack and am planning a week long hike in the Grand Canyon with limited access to water. I will carry my 2L Platypus reservoir in addition to this one.

Asked by: Charlie
​The hose can be easily removed with the quick-release function so it can be used to simply transport water.
Answered by: REIservice
Date published: 2017-02-24

Will the Platypus Big Zip LP Reservoir - 3 Liter fit well in the sleeve of an Osprey - Atmos 65 AG?

Asked by: allenratta
The Platypus Big Zip LP Reservoir will fit well in the Osprey Atmos 65 AG.
Answered by: REIservice
Date published: 2015-09-20

I purchased the Big Zip about 2 or 3 years ago. Is this version BPA free? Thanks!

Asked by: EJ1234
The version you have is BPA free.
Answered by: REIservice
Date published: 2016-11-30
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