---
product_id: 253942416
title: "Waterdrop Gravity Water Filter Straw, Portable Water Purifier Survival for Camping, Hiking, Backpacking and Emergency Preparedness"
brand: "waterdrop"
price: "731 kr"
currency: DKK
in_stock: true
reviews_count: 5
category: "Waterdrop"
url: https://www.desertcart.dk/products/253942416-waterdrop-gravity-water-filter-straw-portable-water-purifier-survival-camping
store_origin: DK
region: Denmark
---

# 1,400 gallons lifespan 0.1μm ultrafiltration membrane 5-stage activated carbon filtration Waterdrop Gravity Water Filter Straw, Portable Water Purifier Survival for Camping, Hiking, Backpacking and Emergency Preparedness

**Brand:** waterdrop
**Price:** 731 kr
**Availability:** ✅ In Stock

## Summary

> 💦 Stay hydrated, stay ahead—purify your adventure with Waterdrop!

## Quick Answers

- **What is this?** Waterdrop Gravity Water Filter Straw, Portable Water Purifier Survival for Camping, Hiking, Backpacking and Emergency Preparedness by waterdrop
- **How much does it cost?** 731 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/253942416-waterdrop-gravity-water-filter-straw-portable-water-purifier-survival-camping)

## Best For

- waterdrop enthusiasts

## Why This Product

- Trusted waterdrop brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Filter straw supports up to 1,400 gallons, ensuring reliable use through countless trips.
- • **All-Day Capacity:** Includes 1.5-gallon water bag—enough purified water for your entire outdoor adventure.
- • **Clean & Recyclable:** Innovative backwash function keeps your filter fresh and eco-friendly for repeated use.
- • **Effortless Hydration:** Gravity-fed system delivers up to 700 ml/min without pumping—stay refreshed on the go.
- • **Pure Water, Anywhere:** Advanced 5-stage filtration removes chlorine, sediment, and odors for crisp, clean hydration.

## Overview

The Waterdrop Gravity Water Filter Straw is a lightweight, portable purifier featuring a 5-stage filtration system with a 0.1-micron ultrafiltration membrane and coconut shell activated carbon. Designed for outdoor enthusiasts, it includes a 1.5-gallon gravity-fed water bag and delivers up to 700 ml/min flow rate. With a lifespan of 1,400 gallons and a convenient backwash cleaning function, it ensures safe, great-tasting water anytime—perfect for camping, hiking, and emergency preparedness.

## Description

How to backwash Backwashing is essential for keeping the Filterstraw in good condition and making it easy to use multiple times. After drinking, blow air through the mouthpiece frequently, or drain the Filterstraw by shaking out as much water as you can. After using, remove the mouthpiece and flush it with clean water. (A standard water bag can be used, or a pop bottle with a standard thread diameter of 27.5mm can be filled with clean water to backwash the Filterstraw.) Cap the filter tightly after it has dried. Note: Do not use chemicals to clean the Filterstraw because they will shorten the service life of the carbon fiber filter. Working principle There are many micro-fibrous tubes in the 0.1-micron hollow fiber filters. They can prevent protozoa from going through the outer walls of the tubes, while water can easily pass through them. The principle of micro-fibrous tubes is similar to that of medical dialysis technology. Therefore, water going through the Filterstraw will be clean and safe.

Review: This is my first gravity water filter system and I have no regrets. I was worried because it was much cheaper that it wouldnt be of good quality but I was surprise how well it works. It looks complicated to use the first time you use it but its actually easy and can be used different ways depending what you like. Light weight, small, can be used different ways and you dont need to bring all the parts with you when you go out, so that makes it even more light weight. The straw can be use just like a regular filter straw or by filling the 20oz water bags that comes with it and screw it directly to the straw to filter water or again a larger bag of 5.5 litres, that looks like a dry bag, that also comes with it, can be hung on anything and that gravity feeds tru the straw than into your container. The filtering is pretty quick. Its nice thats its water gravity so no pumping required like some models. Great tasting, no after taste. Love this product. light weight, easy to use, easy to clean and versatile.
Review: Good quality.

## Features

- 5-Stage Efficient Filtration: With adoption of premium-quality coconut shell activated carbon, 0.1 um ultrafiltration membrane and other raw materials, the Water Filter Straw can effectively reduce harmful substances like chlorine, particulates, sediment, stones, sand, dirt, bad taste &odor in water to ensure the water safety and deliver better drinking experience.
- Professional Combination: Waterdrop Gravity Water Filter Straw with 1.5 gal Gravity-Fed Water Bag is an exclusive water purification combination created for outdoor activities and first aid survival. The large-capacity water bag can hold up to 1.5 Gallons of water at a time, which is about 11 bottles of 500 ml bottled purified water, and can meet the all-day demand for outdoor water drinking.
- Longer Lifespan: The Waterdrop Filter straw can provide safe drinking water up to 1,400 gallons (5,300 liters), and ensures the maximum water flow rate of up to 700 ml/min to provide more relaxed outdoor water drinking experience.
- Recyclable Straw: With innovative backwash purifier function, the inside of the Water Filter Straw can be kept clean at all times and it is recyclable, safe and pollution-free. If the water flow decreases or the filter has been used for a long time, you can remove the mouthpiece, flush it with clean water. (Standard water bag can be used or pop bottle with thread diameter of 27.5mm can be filled clean water for backwashing the filter straw.)
- Versatile Uses: The Water Filter Straw can be connected with water bags or water bottles to filter water for drinking. Both ends of it can be disassembled and connected with the water bags and the water bottles to offer you clean drinking water anytime anywhere.
- Warm Prompt: If the gravity bag is used to filter water, turn on the drainage valve first to empty air from the hose before connecting with the straw to avoid no water flow in a vacuum state.
- Multi-scene Application: As a necessity for outdoor water purification, the Waterdrop Gravity Water Filter Straw is applicable to hiking, camping, domestic and international travel, emergency preparedness (tornadoes, rainstorms, earthquakes, floods, etc.) to meet the emergency water demand in a variety of situations.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B086QNLBB4 |
| Best Sellers Rank | #14,438 in Sporting Goods ( See Top 100 in Sporting Goods ) #16 in Camping & Hiking Water Filters |
| Item model number | WD-FSBUL-1 |
| Manufacturer | Waterdrop |
| Product Dimensions | 17.2 x 8.6 x 27.7 cm; 131.54 g |

## Product Details

- **Brand:** Waterdrop
- **Capacity:** 1.5 Gallons
- **Material:** Activated Carbon
- **Product dimensions:** 17.2L x 8.6W x 27.7H centimeters
- **Special features:** Chlorine Reduction

## Images

![Waterdrop Gravity Water Filter Straw, Portable Water Purifier Survival for Camping, Hiking, Backpacking and Emergency Preparedness - Image 1](https://m.media-amazon.com/images/I/61QubWlo4gL.jpg)

## Questions & Answers

**Q: does it protect against Giardia lamblia? Thanks**
A: Yes

**Q: How much does this weigh?**
A: Hi Shawn,
Thank you so much for your interest in our product. The item's gross weight is 1.09 pounds.
If you have any other inquiries, please feel free to contact us at 1-888-352-3558 (8:00 AM - 5:00 PM PST, Mon - Fri). Thank you.

Kind Regards
Mia Lauren
Customer Service Rep

**Q: how long does this product last? 1 day? 1 month?**
A: I  used it for the first time this weekend. On a backpacking trip. I thought it was useful to have in addition to a filter pump to bring water back to Camp. It seemed well-made, how long it will last Would probably depend on how dirty the water is that you put through it ,if you clean it consistently and if you were careful not to abuse it. But I will get $20 worth of use out of it for sure.  I expect it to last me for multiple trips.

**Q: Does it come with the bag?**
A: Hi Mike,

Thank you for your interest in our Water Filter Straw. Yes, the item comes with two bags.  One is the blue gravity water bag which is used to fill with the raw water, another is white used to fill with the filtered water. They are connected via the straw to filter the water for drinking.
If you have any other questions, please feel free to give us a call between the hours of 8:00 AM-5: 00 PM (PST), Monday through Friday at 1-888-352-3558. We will try our best to help you out. Thank you very much.

Best Regards, 
Mia Lauren

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by L***B on 4 November 2025*

This is my first gravity water filter system and I have no regrets. I was worried because it was much cheaper that it wouldnt be of good quality but I was surprise how well it works. It looks complicated to use the first time you use it but its actually easy and can be used different ways depending what you like. Light weight, small, can be used different ways and you dont need to bring all the parts with you when you go out, so that makes it even more light weight. The straw can be use just like a regular filter straw or by filling the 20oz water bags that comes with it and screw it directly to the straw to filter water or again a larger bag of 5.5 litres, that looks like a dry bag, that also comes with it, can be hung on anything and that gravity feeds tru the straw than into your container. The filtering is pretty quick. Its nice thats its water gravity so no pumping required like some models. Great tasting, no after taste. Love this product. light weight, easy to use, easy to clean and versatile.

### ⭐⭐⭐⭐⭐ Review
*by M***F on 20 December 2025*

Good quality.

### ⭐ Review
*by J***Y on 29 April 2025*

I only received the big blue bag and hose no filter and small bottle is delivered, very poor delivery...

## Frequently Bought Together

- Waterdrop Gravity Water Filter Straw, Camping Water Filtration System, Water Purifier Survival for Travel, Backpacking and Emergency Preparedness, 1.5 gal Bag, 0.1 Micron, 5 Stage Filtration, Blue
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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-02-06*