Guardian Gravity Purifier

$309.95

Shipping calculated at checkout.

Size: 10L 10L

Product variants

Pickup available at Arlington, TX

Usually ready in 24 hours

Family-owned since 1972

Free shipping over $99

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The Guardian Gravity Purifier has you covered with safe water around the world, removing viruses, bacteria, protozoa, sediment and microplastics hands-free. Simply hang it while you go about your tasks at the hostel, basecamp or campsite—its 10L reservoir supports the daily water needs of multiple people. Originally designed to protect servicemembers in the field, this rugged purifier handles the abuse of travel and meets the NSF P248 military testing standard.

WARNING: Cancer and reproductive harm

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*Meets U.S. EPA Guide Standard and Protocol for Testing Microbiological Purifiers

Features

Ultimate Virus Protection: Meets NSF protocol P248 military testing standard for removing viruses (99.99%), bacteria (99.9999%), protozoa (99.9%), sediment and microplastics from “worst-case” water conditions.
Better-Tasting Water: Two-stage purifier includes activated carbon to reduce chemicals and unpleasant tastes and odors.
Easy to Fill: 10 -liter reservoir is easy to fill at sinks and streams alike; covers daily water needs for drinking, cooking and hygiene.
Simple Cleaning: No backflushing required—simply opening the purge hose flushes the system to clean it and maintain flow rate.
Fast-Flow Rate: Up to 1 liter in 2 minutes with optimal reservoir hang height of 6 feet, 2.5x faster than the next leading gravity purifier.
Engineered for Travel: Rugged, military-grade construction. Compact system fits easily in carry-on luggage and smaller packs.
NSF P248 Testing Standard: The most rigorous scientific certification for proving a treatment device safely removes claimed contaminants from challenging wilderness water sources. Guardian devices are the market’s only purifiers to pass the military standard P248 testing for virus removal.

Specs

Weight (Standard):1 lbs 3 oz
Weight (Metric):0.53 kgWidth (Standard):4 in
Width (Metric):10 cm
Length (Standard):12 in
Length (Metric):30 cm
Height (Standard):4 in
Height (Metric):10 cm
Effective against bacteria:Yes
Effective against chemicals/toxins:No
Effective against particulate:Yes
Effective against protozoa:Yes
Effective against viruses:Yes
Filter media:Advanced Hollow
FiberFilter pore size (microns):0.02Flow (L/min):0.5 liters per min
Cartridge life:3,000+ litersField cleanable:Yes
Field maintainable:Yes
Water Bottle Adapter:Yes
Cartridge replacement indicator:Yes
Material(s):UF Hollow Fiber, ABS

About The Brand

MSRMSR has been pushing the limits of backcountry innovation since 1969. From ultralight stoves to reliable snow tools, they make gear that earns your trust when it matters most. At Mountain Sports, we love MSR for its no-compromise engineering — because out there, dependability isn’t optional.

The North Face Sizing Charts

Womens Jackets and Tops:

	Chest	Waist	Hip	Sleeve Length
XS	31-32 in	24-25 in	33-35 in	31.5 in
SM	33-35 in	26-28 in	36-37 in	32.0 in
MD	36-38 in	29-31 in	38-40 in	32.5 in
LG	39-41 in	32-34 in	41-43 in	33.3 in
XL	42-44 in	35-38 in	44-47 in	34.0 in
2XL	45-48 in	39-42 in	48-51 in	34.8 in
1X	43-45 in	36-38 in	46-48 in	31.5 in
2X	47-49 in	40-42 in	50-52 in	32.25 in
3X	51-53 in	44-46 in	54-56 in	33 in

Womens Bottoms:

	Waist	Hips	Inseam (Short)	Inseam (Reg.)	Inseam (Long)
XS (0)	25-26 in	34-35 in	28.5 in	30.5 in	32.5 in
XS (2)	26-27 in	35-36 in	28.5 in	30.5 in	32.5 in
SM (4)	27-28 in	36-37 in	29.0 in	31.0 in	33.0 in
SM (6)	28-29 in	37-38 in	29.0 in	31.0 in	33.0 in
MD (8)	29-30 in	38-39 in	29.0 in	31.0 in	33.0 in
MD (10)	30-31 in	39-40 in	29.0 in	31.0 in	33.0 in
LG (12)	31-33 in	40-42 in	29.0 in	31.0 in	33.0 in
LG (14)	33-35 in	42-44 in	29.5 in	31.5 in	33.5 in
XL (16)	35-37 in	44-46 in	29.5 in	31.5 in	33.5 in
XL (18)	37-39 in	46-48 in	29.5 in	31.5 in	33.5 in
1X (14)	36-37 in	46-47 in	28 in	30 in	32 in
1X (16)	37-38 in	47-48 in	28 in	30 in	32 in
2X (18)	40-41 in	50-51 in	28 in	30 in	32 in
2X (20)	41-42 in	51-52 in	28 in	30 in	32 in
3X (22)	44-45 in	54-55 in	28 in	30 in	32 in
3X (24)	45-46 in	55-56 in	28 in	30 in	32 in

Womens Footwear

USA	UK	EU	CM
5	3	36	22
5.5	3.5	36.5	22.5
6	4	37	23
6.5	4.5	37.5	23.5
7	5	38	24
7.5	5.5	38.5	24.5
8	6	39	25
8.5	6.5	39.5	25.5
9	7	40	26
9.5	7.5	40.5	26.5
10	8	41	27
10.5	8.5	41.5	28
11	9	42	28.8

Mens Jackets and Tops:

	Chest	Hips	Sleeve Length
SM	36-38 in	35-37 in	33.5 in
MD	39-41 in	38-40 in	34.0 in
LG	42-44 in	41-43 in	34.8 in
XL	45-48 in	44-46 in	35.5 in
2XL	49-52 in	47-49 in	36.3 in
3XL	53-56 in	50-52 in	37.0 in

Mens Bottoms:

	Waist	Hip	Inseam (Short)	Inseam (Reg.)	Inseam (Long)
30(SM)	29-30 in	35-36 in	29.5 in	31.5 in	33.5 in
32(MD)	31-32 in	37-38 in	30.0 in	32.0 in	34.0 in
34(MD)	33-34 in	39-40 in	30.0 in	32.0 in	34.0 in
36(LG)	35-36 in	41-42 in	30.0 in	32.0 in	34.0 in
38(LG)	37-38 in	43-44 in	30.5 in	32.5 in	34.5 in
40(XL)	39-40 in	44-45 in	30.5 in	32.5 in	34.5 in
42(XL)	41-42 in	46-47 in	30.5 in	32.5 in	34.5 in
44(2X)	43-44 in	47-48 in	30.5 in	32.5 in	34.5 in

Mens Shoes:

USA	UK	EU	CM
7	6	39	25
7.5	6.5	40	25.5
8	7	40.5	26
8.5	7.5	41	26.5
9	8	42	27
9.5	8.5	42.5	27.5
10	9	43	28
10.5	9.5	44	28.5
11	10	44.5	29
11.5	10.5	45	29.5
12	11	45.5	30
12.5	11.5	46	30.5
13	12	47	31
13.5	12.5	47.5	31.5
14	13	48	32
14.5	13.5	49	32.5

Girls::

	Height	Weight	Chest	Waist
XXS (5)	42-44 in	40-43 lbs	23-24 in	22-23 in
XS (6)	45-47 in	44-50 lbs	24-25 in	22-23 in
SM (7-9)	48-53 in	51-65 lbs	25-27 in	23-24 in
MD (10-12)	54-59 in	66-87 lbs	27-29 in	24-26 in
LG (14-16)	60-63 in	86-105 lbs	30-32 in	27-29 in
XL (18-20)	64-65 in	106-115 lbs	33-35 in	30-32 in

Boys::

	Height	Weight	Chest	Waist
XXS (5)	42-44 in	40-43 lbs	23-24 in	22-23 in
XS (6)	45-47 in	44-50 lbs	24-25 in	22-23 in
SM (7-9)	48-53 in	51-65 lbs	25-27 in	23-24 in
MD (10-12)	54-59 in	66-87 lbs	27-29 in	24-26 in
LG (14-16)	60-64 in	88-115 lbs	30-32 in	27-29 in
XL (18-20)	65-69 in	116-140 lbs	33-35 in	29-31 in

Patagonia Size Charts

Mens Tops:

	Chest	Sleeves	Waist	Neck	Inseam
XX-Small	31-33	31	26	13½-14	30
X-Small	34-35	32	28	14-14½	31
Small	35-37	33	29-30	15-15½	31
Medium	38-40	34	31-33	15½-16	32
Large	42-44	35	34-36	16½-17	33
X-Large	46-48	36	38-40	17-17½	33
XX-Large	50-52	37	42-44	17½-18	33
XXX-Large	54-56	38	46-48	18½	33

Mens Bottoms:

	Waist	Inseam*
XX-Small	26	31
X-Small	28	31
Small	29	31
Medium	31	32
Medium	32	32
Medium	33	32
Large	34	33
Large	35	33
Large	36	33
X-Large	38	33
X-Large	40	33
XX-Large	42	33
XX-Large	44	33
XXX-Large	46	33
XXX-Large	48	33

Measurements refer to body size, not garment dimensions, and are in inches, unless otherwise noted.* Inseam will vary depending on style; when lengths are offered, "short" is 30, "regular" is 32 and "long" is 34, unless otherwise noted.

Womens Tops:

Measurements are in inches, unless otherwise noted.

	Numeric	Chest	Waist	Hip	Inseam
XX-Small	00	31	24½	33½	30
X-Small	0-2	32-33	25½-26½	34½-35½	31
Small	4-6	34-35	27½-28½	36½-37½	32
Medium	8-10	36-37	29½-30½	38½-39½	32
Large	12-14	38½-40	32½-33½	41-42½	32
X-Large	16-18	42-44	35½-37½	45½-46½	32
XX-Large	20-22	46-48	40½-41½	48½-50½	32

Womens Bottoms:

Measurements refer to body size, not garment dimensions, and are in inches, unless otherwise noted.
* Inseam will vary depending on style; when lengths are offered, "short" is 30, "regular" is 32 and "long" is 34, unless otherwise noted.

	Size	Jeans & Cords	Natural Waist	Inseam
XX-Small	00	24	24.5	30
X-Small	0	25	25.5	31
X-Small	2	26	26.5	31
Small	4	27	27.5	32
Small	6	28	28.5	32
Medium	8	29	29.5	32
Medium	10	30	30.5	32
Large	12	31	32	32
Large	14	32	33.5	32
X-Large	16	33	35.5	32
X-Large	18	34	37.5	32
XX-Large	20	—	39.5	32
XX-Large	22	—	41.5	32

Kids:

Measurements are in inches, unless otherwise noted.

Boys'	Sizes	Chest	Waist	Height	Weight (lbs.)
X-Small	5-6	23-24	22½-23	44-46½	42-49
Small	7-8	25½-26½	23½-24½	49½-52	52-68
Medium	10	27½	25½	55½	71-85
Large	12	28½	26½	58½	87-100
X-Large	14	30½	28	61½	102-112
XX-Large	16-18	32-33½	29½-31	64-66½	114-135

Girls'	Sizes	Chest	Waist	Height	Weight (lbs.)
X-Small	5-6	23-24	22½-23	44-46½	42-49
Small	7-8	26-27	23½-24½	50½-52½	52-68
Medium	10	28½	25	55	71-87
Large	12	30	26	58	87-100
X-Large	14	31½	28	61	102-112
XX-Large	16-18	33½-35½	30-32	62½	114-135