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expirediconian | Staff posted Aug 15, 2024 02:47 PM
expirediconian | Staff posted Aug 15, 2024 02:47 PM

4-Pack Membrane Solutions Water Filter Straws

w/ S&S + Free Shipping

$25

$40

37% off
Amazon
37 Comments 27,552 Views
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Deal Details
Amazon has 4-Pack Membrane Solutions Water Filter Straws (WS02) on sale for $39.99 - $13 'clipped' coupon - 5% Subscribe & Save discount = $24.99. Shipping is free.

Thanks to Deal Editor iconian for finding this deal.

Features:
  • Only detachable straw on the market, both ends can be disassembled.
  • Detachable mouthpiece connects with the common bottle for backwashing
  • 4-Stage Filtration
Note: You must be logged into your account. Coupons are typically one use per account. You have the flexibility to manage your Subscribe & Save subscription at any time after your order ships. View Subscribe & Save filler items and our current Subscribe & Save Frontpage deals to unlock up to extra 15% savings when you have 5 or more items in your current monthly subscription.

Editor's Notes

Written by johnny_miller | Staff
  • About this Offer:
    • This is $3.73 each lower (37% savings) than the next lowest price from a reputable merchant with prices starting from $9.98 each.
  • About this Product:
    • This is rated 4.6 out of 5 stars based on over 1300 ratings at Amazon.
  • About this Store:
  • Please see the original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.

Original Post

Written by iconian | Staff
Product Info
Community Notes
About the Poster
Deal Details
Product Info
Community Notes
About the Poster
Amazon has 4-Pack Membrane Solutions Water Filter Straws (WS02) on sale for $39.99 - $13 'clipped' coupon - 5% Subscribe & Save discount = $24.99. Shipping is free.

Thanks to Deal Editor iconian for finding this deal.

Features:
  • Only detachable straw on the market, both ends can be disassembled.
  • Detachable mouthpiece connects with the common bottle for backwashing
  • 4-Stage Filtration
Note: You must be logged into your account. Coupons are typically one use per account. You have the flexibility to manage your Subscribe & Save subscription at any time after your order ships. View Subscribe & Save filler items and our current Subscribe & Save Frontpage deals to unlock up to extra 15% savings when you have 5 or more items in your current monthly subscription.

Editor's Notes

Written by johnny_miller | Staff
  • About this Offer:
    • This is $3.73 each lower (37% savings) than the next lowest price from a reputable merchant with prices starting from $9.98 each.
  • About this Product:
    • This is rated 4.6 out of 5 stars based on over 1300 ratings at Amazon.
  • About this Store:
  • Please see the original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.

Original Post

Written by iconian | Staff

Community Voting

Deal Score
+28
Good Deal
Visit Amazon

Price Intelligence

Model: Membrane Solutions WS02 4-Stage Water Filter Straw, Detachable, 0.1-Micron, Portable, 4-Pack, BPA-Free, Food-grade, Ideal for Hiking, Camping, Travel, Emergency Preparedness

Deal History 

Sort: Most Recent
Post Date Sold By Sale Price Activity
06/06/24Amazon$24 frontpage
13

Current Prices

Sort: Lowest to Highest | Last Updated 8/13/2025, 10:11 PM
Sold By Sale Price
Amazon$39.99

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Top Comments

Dealer_Of_Slickness
5554 Posts
1127 Reputation
So these filter particulates but what about things like parasites, chemical contamination, etc?
snafufubarpita
2080 Posts
797 Reputation
These are knockoffs of life straw ✌️
BrianD1969
136 Posts
42 Reputation
You're killing me here. My inner prepper keeps buying stuff. Enoughhhhhhh already.
In for one....thx op.....I don't like you.

36 Comments

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Aug 16, 2024 07:17 AM
10 Posts
Joined Sep 2010

This comment has been rated as unhelpful by Slickdeals users.

Aug 16, 2024 07:46 AM
2,080 Posts
Joined Dec 2012
snafufubarpitaAug 16, 2024 07:46 AM
2,080 Posts
Quote from sbk_doll :
These are better than life straw! Great buy!
These are knockoffs of life straw ✌️
2
Aug 16, 2024 10:52 AM
1,551 Posts
Joined Jul 2006
AnalogAug 16, 2024 10:52 AM
1,551 Posts
Looks like something great for emergencies or back country camping.
Aug 16, 2024 11:58 AM
235 Posts
Joined Jun 2018
RayacerAug 16, 2024 11:58 AM
235 Posts
Can you use this on salt water?
1
Aug 16, 2024 12:07 PM
1,219 Posts
Joined May 2013
TechManDadAug 16, 2024 12:07 PM
1,219 Posts
Quote from Rayacer :
Can you use this on salt water?
No. For that you need dedicated desalination such as distillation or for low salt, Reverse osmosis.
Aug 16, 2024 12:12 PM
1,219 Posts
Joined May 2013
TechManDadAug 16, 2024 12:12 PM
1,219 Posts
Quote from sbk_doll :
These are better than life straw! Great buy!
They certainly are cheaper.

As far as function they are likely the same since they both advertise 0.1 micron.

Lifestraw seems like the original, and better built.
1
Aug 16, 2024 01:02 PM
136 Posts
Joined Jul 2019
BrianD1969Aug 16, 2024 01:02 PM
136 Posts
You're killing me here. My inner prepper keeps buying stuff. Enoughhhhhhh already.
In for one....thx op.....I don't like you.
3

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Aug 16, 2024 01:04 PM
221 Posts
Joined Apr 2015
officeshopperAug 16, 2024 01:04 PM
221 Posts
4 pack, why would you need (4)? Are they a one and done use? Just curious.. of course (4) for four different people but wasn't sure if -they only need to be used once or something.
Aug 16, 2024 01:29 PM
12 Posts
Joined Aug 2014
mtbeck90Aug 16, 2024 01:29 PM
12 Posts
Deal. In for 1
2
Pro
Aug 16, 2024 01:30 PM
5,554 Posts
Joined Nov 2017
Abused.Return.Policy
Pro
Aug 16, 2024 01:30 PM
5,554 Posts
Quote from TechManDad :
No. For that you need dedicated desalination such as distillation or for low salt, Reverse osmosis.
So these filter particulates but what about things like parasites, chemical contamination, etc?
1
Aug 16, 2024 02:17 PM
1,219 Posts
Joined May 2013
TechManDadAug 16, 2024 02:17 PM
1,219 Posts
Quote from Christian4423 :
Someone works for life straw
Mmmkay buddy.

You'll have to show where I'm wrong first, before we take you seriously.
7
Aug 16, 2024 02:24 PM
1,219 Posts
Joined May 2013
TechManDadAug 16, 2024 02:24 PM
1,219 Posts

Our community has rated this post as helpful. If you agree, why not thank TechManDad

Quote from Dealer_Of_Slickness :
So these filter particulates but what about things like parasites, chemical contamination, etc?
I'm not an expert.

0.1 microns seems to be the standard for heavy metals, plastic, bacteria, and many chemicals.

0.1 micron seems like the best you can get before going to RO which requires more pressure and can be inconvenient to carry.

The goal of these filters is to allow you to hydrate and not get a gastrointestinal sickness while away from medical services.

Unknown stuff is going to get through, but probably not the ones that make you sick.

Hence the "99.999999%" they always advertise.
1
Aug 16, 2024 05:16 PM
769 Posts
Joined Nov 2014
warre2mAug 16, 2024 05:16 PM
769 Posts

Our community has rated this post as helpful. If you agree, why not thank warre2m

These are great. I use them backpacking without issue. I think the Life Straw Squeeze has a dangerous design flaw with how the filter attaches. It can fall off inside the bag without the user noticing and then you're screwed. Pun intended as it should be a screw threaded design.
1
1
Aug 17, 2024 12:18 AM
377 Posts
Joined Nov 2010
lawstudentAug 17, 2024 12:18 AM
377 Posts
For reference the older version 4 pack was $15 couple weeks ago. I almost bought but fell asleep on the couch.

This newer version was a 5 pack for $28 last May. Newer version has additional compatibility for water bottle thread coupling from what I can tell.

The slick deals all seem to copy and paste jobs from prepping deals dot net. Or vice versus.

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Aug 17, 2024 04:45 AM
1,646 Posts
Joined Jun 2009
SiXiamAug 17, 2024 04:45 AM
1,646 Posts
Quote from TechManDad :
I'm not an expert.

0.1 microns seems to be the standard for heavy metals, plastic, bacteria, and many chemicals.

0.1 micron seems like the best you can get before going to RO which requires more pressure and can be inconvenient to carry.

The goal of these filters is to allow you to hydrate and not get a gastrointestinal sickness while away from medical services.

Unknown stuff is going to get through, but probably not the ones that make you sick.

Hence the "99.999999%" they always advertise.
Yes, it is a number game. One bacteria or one virus would give very low, almost impossible odds of you getting sick. But the larger the group the worse your odds.

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