Can the straw be used on its own, the way the Life Straw can?

Hi, Thanks for your question. Please rest assured that it can be used on its own. If you have any other questions,please feel free to contact us. Kind Regards Mia Lauren Customer Service Rep

Can I buy replacement filters for it?

Hi, Thanks for your interest in our filter straw product. Please rest assured that you can reverse-flush the straw (instruction included) to prolong its lifetime; furthermore, you can also purchase a new filter straw to replace the old one: Link: https://www.amazon.com/Waterdrop-Portable-Filtration-Emergency-Backpacking/dp/B086QKX42Q/?th=1&psc=1 If you have contacted us via email but received no reply, please check the Spam/Junk Folder first. Thank you. If you have any other inquiries, please feel free to contact us. 1-888-352-3558 (8:00 AM - 5:00 PM PST, Mon - Fri). Kind Regards Mia Lauren Customer Service Rep

To confirm, are 4 20 oz BPA-free reusable collapsible water bags also included or this is just for the filter straws?

Dear Aaliyah, Thank you for your inquiry. 4 packs of 20 oz BPA-free reusable collapsible water bags are also included in the package. Please don't hesitate to let me know if you have any other questions. Kind Regards, Mia Lauren Customer Service Rep

How long does it take to gravity filter 1.5 gallons?

Dear customer, Thank you for your interest in our product. Please note that it should take around 11-12 minutes to gravity filter 1.5 gallons. If you have contacted us via email but received no reply, please check the Spam/Junk Folder first. Thank you. If you have any other inquiries, please feel free to contact us. 1-888-352-3558 (8:00 AM - 5:00 PM PST, Mon - Fri). Kind Regards Mia Lauren Customer Service Rep

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Gravity Water Filter Straw, Camping Water Filtration System, Water Purifier Survival for Travel, Backpacking and Emergency Preparedness, 1.5 gal Bag, 5 Stage Filtration, Pack of 2

Product ID: 337013321

Details

Brand
Waterdrop
Capacity
1.5 Gallons
Included Components
Water Filter
Installation Type
Freestanding
Material
Hollow Fiber
Package Information
Bag

⚡700 ml/min max flow rate

💧5-stage ultrafiltration at 0.1μm

🛶1.5 gal gravity-fed water bag capacity

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¥13768

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💦 Stay hydrated, stay ahead—purify your adventure with every sip!

VERSATILE READY - Connects to water bags or bottles with quick-disconnect ends for instant purified water on demand.
FAST FLOW NO FUSS - Up to 700 ml/min flow rate means less waiting, more sipping during your hikes or emergencies.
ULTRA PURE HYDRATION - 5-stage filtration removes chlorine, sediment, odor & more for crisp, clean water anywhere.
BUILT TO LAST REUSE - Filter up to 1,400 gallons with easy backwash cleaning—eco-friendly and ready for every trip.
HYDRATE THE WHOLE CREW - 1.5-gallon gravity-fed bag holds 11 bottles worth of water—perfect for all-day outdoor adventures.

The Waterdrop Gravity Water Filter Straw is a professional-grade, 5-stage ultrafiltration system featuring a 0.1-micron hollow fiber membrane that removes harmful contaminants and improves taste. Paired with a 1.5-gallon gravity-fed water bag, it delivers up to 700 ml/min of purified water, supporting up to 1,400 gallons of use. Designed for camping, backpacking, and emergency preparedness, it offers easy backwash cleaning and versatile connectivity to bottles or bags, ensuring safe hydration anytime, anywhere.

Specifications

ASIN	B09285L8JL
Best Sellers Rank	#859 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #6 in Camping & Hiking Water Filters
Brand Name	Waterdrop
Capacity	1.5 Gallons
Container Type	Bag
Customer Reviews	4.6 4.6 out of 5 stars (3,594)
Included Components	Water Filter Straw 2, 1.5 Gal Gravity-Fed Water Bag 1, 16 oz Water Pouch *2
Installation Type	Freestanding
Item Dimensions L x W x H	10.16"L x 3.39"W x 11"H
Manufacturer	Waterdrop
Material Type	Hollow Fiber Ultrafiltration Membrane
Maximum Flow Rate	700 Milliliters Per Minute
Model Name	WD-FSBUL
Model Number	WD-FSBUL
Other Special Features of the Product	Gravity Water Filter Straw, Water Purifier Survival
Part Number	WD-FSBUL
Power Source	Non Electric
Purification Method	Hollow Fiber Ultrafiltration Membrane
Smart Home Compatibility	Not Smart Home Compatible
Supported Water TDS Level Maximum (PPM)	500
Unit Count	2.0 Count
Warranty Description	30 days limited filter warranty - Any part of the water filter which fails due to a defect in materials or workmanship during this limited 30-day warranty.

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