Curated list · Water Bottles
Water bottles with a built-in filter
We compared 12 bottles that meet these criteria. The lightest is the Grayl 16.9oz UltraPress® Purifier at 0.8 lb, and prices start at $35.96.
By Everyday LoadoutData checked 12 bottles comparedHow we compare
At a glance
Side-by-side specs
| Bottle | Capacity | Material | Diameter | Insulated | From |
|---|---|---|---|---|---|
| Grayl 16.9oz UltraPress® Purifier | 500 mL | Polypropylene | 75 mm | — | $89.95 |
| Grayl 16.9oz UltraPress® Ti Purifier | 500 mL | Titanium | 70 mm | — | $179.95 |
| LifeStraw Go Series Stainless Steel 18 oz | 530 mL | Stainless steel | 71 mm | Yes | $39.96 |
| LifeStraw Go Series Glass 20 oz | 591 mL | Glass | 80 mm | — | $47.96 |
| LifeStraw Go Series 22 oz | 650 mL | — | 71 mm | — | $35.96 |
| LifeStraw Go Series Stainless Steel 24 oz | 700 mL | Stainless steel | 100 mm | Yes | $47.96 |
| Grayl 24oz GeoPress® Purifier | 710 mL | Polypropylene | 86 mm | — | $89.95 |
| Grayl 24oz GeoPress® Ti Purifier | 710 mL | Titanium | 82 mm | — | $219.95 |
| Mazama Designs Tritan Bottle with Philta Filter | 710 mL | Tritan | — | — | $44.95 |
| Katadyn BeFree | 1 L | TPU | — | — | $52.95 |
| LifeStraw Go Series 1L | 1 L | — | 89 mm | — | $39.96 |
| LifeStraw Go Series Stainless Steel 1L | 1 L | Stainless steel | 100 mm | Yes | $51.96 |
Image not availableThe Grayl 16.9oz UltraPress® Purifier is a 500 mL (17 fl oz) polypropylene water bottle that weighs 354 g, is 75 mm across and has a built-in filter. Its body is polypropylene.
It's the fourth lightest of the 11 bottles here that publish a weight. Worth knowing: sold by one retailer we track (Grayl store).
- Capacity
- 500 mL (17 fl oz)
- Weight
- 0.8 lb · 354 g
- Material
- Polypropylene
- Diameter
- 75 mm (3 in)
- Lid
- Not published
$89.95at Grayl store, Mojave Redrock
Check price for the Grayl 16.9oz UltraPress® Purifier at Grayl store (opens in new tab)Full specs and sources for the Grayl 16.9oz UltraPress® PurifierLowest in-stock price as of Oct 25, 2026.
Stands out
- Slim: 75 mm across
- Built-in filter (150 L)
- BPA-free
- Carry loop
Worth knowing
- Sold by one retailer we track (Grayl store)
Image not availableColors: Covert Black
The Grayl 16.9oz UltraPress® Ti Purifier is a 500 mL (17 fl oz) titanium water bottle that weighs 400 g, is 70 mm across and has a built-in filter. Its body is titanium.
It's the fifth lightest of the 11 bottles here that publish a weight. Worth knowing: sold by one retailer we track (Grayl store).
- Capacity
- 500 mL (17 fl oz)
- Weight
- 0.9 lb · 400 g
- Material
- Titanium
- Diameter
- 70 mm (2.8 in)
- Lid
- Not published
$179.95at Grayl store, Covert Black
Check price for the Grayl 16.9oz UltraPress® Ti Purifier at Grayl store (opens in new tab)Full specs and sources for the Grayl 16.9oz UltraPress® Ti PurifierLowest in-stock price as of Oct 25, 2026.
Stands out
- Slim: 70 mm across
- Safe on a stove or fire
- Built-in filter (150 L)
- BPA-free
- Carry loop
Worth knowing
- Sold by one retailer we track (Grayl store)
Image not availableThe LifeStraw Go Series Stainless Steel 18 oz is a 530 mL (18 fl oz) insulated stainless steel water bottle that weighs 450 g, is 71 mm across and has a built-in filter. Its body is stainless steel and its opening is 60 mm.
It's the 5th lightest of the 11 bottles here that publish a weight. Worth knowing: sold by one retailer we track (LifeStraw store).
- Capacity
- 530 mL (18 fl oz)
- Weight
- 1.0 lb · 450 g
- Material
- Stainless steel
- Diameter
- 71 mm (2.8 in)
- Lid
- Not published
$39.96was $49.95at LifeStraw store, Kyoto Orange
Lowest in-stock price as of Oct 25, 2026.
Stands out
- Slim: 71 mm across
- Vacuum insulated
- Built-in filter (4,000 L)
- Leakproof
- Dishwasher safe
Worth knowing
- Sold by one retailer we track (LifeStraw store)
Image not availableThe LifeStraw Go Series Glass 20 oz is a 591 mL (20 fl oz) glass water bottle that weighs 540 g, is 80 mm across and has a built-in filter. Its body is glass.
It's the 8th lightest of the 11 bottles here that publish a weight. Worth knowing: sold by one retailer we track (LifeStraw store).
- Capacity
- 591 mL (20 fl oz)
- Weight
- 1.2 lb · 540 g
- Material
- Glass
- Diameter
- 80 mm (3.1 in)
- Lid
- Not published
$47.96was $59.95at LifeStraw store, Icelandic Blue
Lowest in-stock price as of Oct 25, 2026.
Stands out
- Built-in filter (4,000 L)
- Leakproof
- Dishwasher safe
- Carry loop
Worth knowing
- Sold by one retailer we track (LifeStraw store)
LifeStraw Go Series 22 oz
Lowest price
Image not availableThe LifeStraw Go Series 22 oz is a 650 mL (22 fl oz) water bottle that weighs 247 g, is 71 mm across and has a built-in filter.
It's the second lightest of the 11 bottles here that publish a weight and the least expensive here at $35.96. Worth knowing: sold by one retailer we track (LifeStraw store).
- Capacity
- 650 mL (22 fl oz)
- Weight
- 0.5 lb · 247 g
- Material
- Not published
- Diameter
- 71 mm (2.8 in)
- Lid
- Not published
$35.96was $44.95at LifeStraw store, Icelandic Blue
Lowest in-stock price as of Oct 25, 2026.
Stands out
- Slim: 71 mm across
- Built-in filter (4,000 L)
- Leakproof
- Dishwasher safe
- BPA-free
Worth knowing
- Sold by one retailer we track (LifeStraw store)
Image not availableThe LifeStraw Go Series Stainless Steel 24 oz is a 700 mL (24 fl oz) insulated stainless steel water bottle that weighs 509 g, is 100 mm across and has a built-in filter. Its body is stainless steel.
It's the 7th lightest of the 11 bottles here that publish a weight. Worth knowing: sold by one retailer we track (LifeStraw store).
- Capacity
- 700 mL (24 fl oz)
- Weight
- 1.1 lb · 509 g
- Material
- Stainless steel
- Diameter
- 100 mm (3.9 in)
- Lid
- Not published
$47.96was $59.95at LifeStraw store, Cactus Green
Lowest in-stock price as of Oct 25, 2026.
Stands out
- Vacuum insulated
- Built-in filter (4,000 L)
- Leakproof
- Dishwasher safe
- Carry loop
Worth knowing
- Sold by one retailer we track (LifeStraw store)
Image not availableThe Grayl 24oz GeoPress® Purifier is a 710 mL (24 fl oz) polypropylene water bottle that weighs 450 g, is 86 mm across and has a built-in filter. Its body is polypropylene.
It's the 6th lightest of the 11 bottles here that publish a weight. Worth knowing: sold by one retailer we track (Grayl store).
- Capacity
- 710 mL (24 fl oz)
- Weight
- 1.0 lb · 450 g
- Material
- Polypropylene
- Diameter
- 86 mm (3.4 in)
- Lid
- Not published
$89.95was $99.95at Grayl store, Wanderer Red
Lowest in-stock price as of Oct 25, 2026.
Stands out
- Built-in filter (250 L)
- BPA-free
- Carry loop
Worth knowing
- Sold by one retailer we track (Grayl store)
Image not availableThe Grayl 24oz GeoPress® Ti Purifier is a 710 mL (24 fl oz) titanium water bottle that weighs 570 g, is 82 mm across and has a built-in filter. Its body is titanium.
It's the 9th lightest of the 11 bottles here that publish a weight and the most expensive here at $219.95. Worth knowing: sold by one retailer we track (Grayl store).
- Capacity
- 710 mL (24 fl oz)
- Weight
- 1.3 lb · 570 g
- Material
- Titanium
- Diameter
- 82 mm (3.2 in)
- Lid
- Not published
$219.95at Grayl store, Olive Drab
Check price for the Grayl 24oz GeoPress® Ti Purifier at Grayl store (opens in new tab)Full specs and sources for the Grayl 24oz GeoPress® Ti PurifierLowest in-stock price as of Oct 25, 2026.
Stands out
- Safe on a stove or fire
- Built-in filter (250 L)
- BPA-free
- Carry loop
Worth knowing
- Sold by one retailer we track (Grayl store)
Image not availableColor not published
The Mazama Designs Tritan Bottle with Philta Filter is a 710 mL (24 fl oz) tritan water bottle that has a built-in filter. Its body is tritan (copolyester) and it ships with a flip-top lid.
Worth knowing: Mazama Designs doesn't publish this bottle's weight.
- Capacity
- 710 mL (24 fl oz)
- Weight
- Not published
- Material
- Tritan (copolyester)
- Diameter
- Not published
- Lid
- Flip-top lid
$44.95at Mazama Designs store
Check price for the Mazama Designs Tritan Bottle with Philta Filter at Mazama Designs store (opens in new tab)Full specs and sources for the Mazama Designs Tritan Bottle with Philta FilterLowest in-stock price as of Oct 25, 2026.
Stands out
- Built-in filter (568 L)
Worth knowing
- Mazama Designs doesn't publish this bottle's weight
- Sold by one retailer we track (Mazama Designs store)
Image not availableColor not published
The Katadyn BeFree is a 1 L (34 fl oz) collapsible tpu water bottle that weighs 76 g and has a built-in filter. Its body is tpu (soft film), it ships with a flip-top lid and its opening is 42 mm.
It's the lightest of the 11 bottles here that publish a weight, 558 g lighter than the heaviest. Worth knowing: sold by one retailer we track (Garage Grown Gear).
- Capacity
- 1 L (34 fl oz)
- Weight
- 0.2 lb · 76 g
- Material
- TPU (soft film)
- Diameter
- Not published
- Lid
- Flip-top lid
$52.95at Garage Grown Gear
Check price for the Katadyn BeFree at Garage Grown Gear (opens in new tab)Full specs and sources for the Katadyn BeFreeLowest in-stock price as of Oct 25, 2026.
Stands out
- Ultralight: 76 g per liter
- Collapses when empty
- Built-in filter (1,000 L)
- BPA-free
- Carry loop
Worth knowing
- Sold by one retailer we track (Garage Grown Gear)
Image not availableThe LifeStraw Go Series 1L is a 1 L (34 fl oz) water bottle that weighs 268 g, is 89 mm across and has a built-in filter.
It's the third lightest of the 11 bottles here that publish a weight. Worth knowing: sold by one retailer we track (LifeStraw store).
- Capacity
- 1 L (34 fl oz)
- Weight
- 0.6 lb · 268 g
- Material
- Not published
- Diameter
- 89 mm (3.5 in)
- Lid
- Not published
$39.96was $49.95at LifeStraw store, Oxford Ivy
Lowest in-stock price as of Oct 25, 2026.
Stands out
- Built-in filter (4,000 L)
- Leakproof
- Dishwasher safe
- BPA-free
- Carry loop
Worth knowing
- Sold by one retailer we track (LifeStraw store)
Image not availableThe LifeStraw Go Series Stainless Steel 1L is a 1 L (34 fl oz) insulated stainless steel water bottle that weighs 634 g, is 100 mm across and has a built-in filter. Its body is stainless steel.
At 1.4 lb it's the heaviest of the 11 bottles here that publish a weight. Worth knowing: heaviest bottle in this list.
- Capacity
- 1 L (34 fl oz)
- Weight
- 1.4 lb · 634 g
- Material
- Stainless steel
- Diameter
- 100 mm (3.9 in)
- Lid
- Not published
$51.96was $64.95at LifeStraw store, Orchid Pink
Lowest in-stock price as of Oct 25, 2026.
Stands out
- Vacuum insulated
- Built-in filter (4,000 L)
- Leakproof
- Dishwasher safe
- Carry loop
Worth knowing
- Heaviest bottle in this list
- Sold by one retailer we track (LifeStraw store)
Questions, answered from the data
What are the lightest water bottles with a built-in filter?
The Katadyn BeFree is the lightest at 0.2 lb (76 g), by Garage Grown Gear's listing (1 of the 12 bottles don't publish a weight).
What's the cheapest option?
The LifeStraw Go Series 22 oz, with a lowest in-stock price of $35.96 this week.
Which fit a backpack side pocket?
The Grayl 16.9oz UltraPress® Ti Purifier (70 mm), the LifeStraw Go Series 22 oz (71 mm), the LifeStraw Go Series Stainless Steel 18 oz (71 mm) and the Grayl 16.9oz UltraPress® Purifier (75 mm) are 75 mm across or slimmer, by the brand's figures, about the width of a 1 L smartwater bottle. Pocket sizes vary, so check yours.
Which can I heat on a stove?
The Grayl 16.9oz UltraPress® Ti Purifier and the Grayl 24oz GeoPress® Ti Purifier are stove or fire safe, per the brand. Take the lid off first.
How we chose
This list includes every bottle in our database that meets all of these criteria: built-in filter. Bottles are sorted by manufacturer weight, lightest first. Nobody pays to be included.
Specs come from manufacturer pages (or, for brands whose own sites we can’t read, a retailer’s page) unless marked otherwise, and every value links to its source on the product page. Prices are the lowest in-stock price we found on Oct 25, 2026 and change often.
This is a spec comparison, not a hands-on review. Summaries are written with AI assistance from verified data only. Read our methodology.