Brand · Water Bottles
HydraPak water bottles
We list 10 HydraPak water bottles, from 350 to 1000 mL and 0.1 lb to 0.2 lb. The lightest with a published weight is the Mountain Stow™ 350ml at 0.1 lb, and prices start at $13.93.
By Everyday LoadoutData checked www.hydrapak.comAbout HydraPak
- Bottles listed
- 10
- Capacity range
- 350 to 1000 mL
- Weight range (published)
- 0.1 lb to 0.2 lb
- Price range
- $13.93 to $42
At a glance
Side-by-side specs
| Bottle | Capacity | Material | Diameter | Insulated | From |
|---|---|---|---|---|---|
| HydraPak Mountain Stow™ 350ml | 350 mL | TPU | — | — | $14.40 |
| HydraPak Stow™ 350ml | 350 mL | TPU | — | — | $18 |
| HydraPak SkyFlask™ Speed 350ml | 350 mL | TPU | — | — | $31 |
| HydraPak Protect Our Winters Stow™ 500ml | 500 mL | TPU | — | — | $21 |
| HydraPak SoftFlask™ Speed 500ml | 500 mL | TPU | — | — | $22 |
| HydraPak SkyFlask™ Speed 500ml | 500 mL | TPU | — | — | $33 |
| HydraPak SkyFlask™ Speed IT 500ml | 500 mL | TPU | — | Yes | $42 |
| HydraPak Mountain Stow™ 500ml | 350 mL–500 mL | TPU | — | — | $13.93 |
| HydraPak Stow™ 1L | 1 L | TPU | — | — | $17.60 |
| HydraPak Stow™ 500ml | 350 mL–1 L | TPU | — | — | $20 |
HydraPak Mountain Stow™ 350ml
Lightest
Image not availableThe HydraPak Mountain Stow™ 350ml is a 350 mL (12 fl oz) collapsible tpu water bottle that weighs 35 g. Its body is tpu (soft film), it ships with a flip-top lid and its opening is 28 mm.
It's the lightest of the 8 bottles here that publish a weight, 42 g lighter than the heaviest. Worth knowing: sold by one retailer we track (HydraPak store).
- Capacity
- 350 mL (12 fl oz)
- Weight
- 0.1 lb · 35 g
- Material
- TPU (soft film)
- Diameter
- Not published
- Lid
- Flip-top lid
$14.40was $18at HydraPak store, Sutro
Lowest in-stock price as of Oct 25, 2026.
Stands out
- Ultralight: 100 g per liter
- Collapses when empty
- Fits squeeze filters
- Leakproof
- BPA-free
Worth knowing
- Sold by one retailer we track (HydraPak store)
Image not availableThe HydraPak Stow™ 350ml is a 350 mL (12 fl oz) collapsible tpu water bottle that weighs 35 g. Its body is tpu (soft film), it ships with a flip-top lid and its opening is 28 mm.
It's the second lightest of the 8 bottles here that publish a weight. Worth knowing: sold by one retailer we track (HydraPak store).
- Capacity
- 350 mL (12 fl oz)
- Weight
- 0.1 lb · 35 g
- Material
- TPU (soft film)
- Diameter
- Not published
- Lid
- Flip-top lid
$18at HydraPak store, Mammoth
Check price for the HydraPak Stow™ 350ml at HydraPak store (opens in new tab)Full specs and sources for the HydraPak Stow™ 350mlLowest in-stock price as of Oct 25, 2026.
Stands out
- Ultralight: 100 g per liter
- Collapses when empty
- Fits squeeze filters
- Leakproof
- Carry loop
Worth knowing
- Sold by one retailer we track (HydraPak store)
Image not availableColors: Malibu
The HydraPak SkyFlask™ Speed 350ml is a 350 mL (12 fl oz) collapsible tpu water bottle that weighs 60 g. Its body is tpu (soft film), it ships with a flip-top lid and its opening is 42 mm.
It's the 5th lightest of the 8 bottles here that publish a weight. Worth knowing: sold by one retailer we track (HydraPak store).
- Capacity
- 350 mL (12 fl oz)
- Weight
- 0.1 lb · 60 g
- Material
- TPU (soft film)
- Diameter
- Not published
- Lid
- Flip-top lid
$31at HydraPak store, Malibu
Check price for the HydraPak SkyFlask™ Speed 350ml at HydraPak store (opens in new tab)Full specs and sources for the HydraPak SkyFlask™ Speed 350mlLowest in-stock price as of Oct 25, 2026.
Stands out
- Collapses when empty
- Fits squeeze filters
- Leakproof
- Dishwasher safe
- Carry loop
Worth knowing
- Sold by one retailer we track (HydraPak store)
Image not availableThe HydraPak Protect Our Winters Stow™ 500ml is a 500 mL (17 fl oz) collapsible tpu water bottle that weighs 45 g. Its body is tpu (soft film), it ships with a flip-top lid and its opening is 28 mm.
It's the third lightest of the 8 bottles here that publish a weight. Worth knowing: sold by one retailer we track (HydraPak store).
- Capacity
- 500 mL (17 fl oz)
- Weight
- 0.1 lb · 45 g
- Material
- TPU (soft film)
- Diameter
- Not published
- Lid
- Flip-top lid
$21at HydraPak store, POW Glacier Blue
Check price for the HydraPak Protect Our Winters Stow™ 500ml at HydraPak store (opens in new tab)Full specs and sources for the HydraPak Protect Our Winters Stow™ 500mlLowest in-stock price as of Oct 25, 2026.
Stands out
- Ultralight: 90 g per liter
- Collapses when empty
- Fits squeeze filters
- Leakproof
- BPA-free
Worth knowing
- Sold by one retailer we track (HydraPak store)
Image not availableColors: Malibu
The HydraPak SoftFlask™ Speed 500ml is a 500 mL (17 fl oz) collapsible tpu water bottle that weighs 46 g. Its body is tpu (soft film), it ships with a sport (push-pull) cap and its opening is 42 mm.
It's the fourth lightest of the 8 bottles here that publish a weight. Worth knowing: sold by one retailer we track (HydraPak store).
- Capacity
- 500 mL (17 fl oz)
- Weight
- 0.1 lb · 46 g
- Material
- TPU (soft film)
- Diameter
- Not published
- Lid
- Sport (push-pull) cap
$22at HydraPak store, Malibu
Check price for the HydraPak SoftFlask™ Speed 500ml at HydraPak store (opens in new tab)Full specs and sources for the HydraPak SoftFlask™ Speed 500mlLowest in-stock price as of Oct 25, 2026.
Stands out
- Ultralight: 92 g per liter
- Collapses when empty
- Leakproof
Worth knowing
- Sold by one retailer we track (HydraPak store)
Image not availableColors: Malibu
The HydraPak SkyFlask™ Speed 500ml is a 500 mL (17 fl oz) collapsible tpu water bottle that weighs 65 g. Its body is tpu (soft film), it ships with a flip-top lid and its opening is 42 mm.
It's the 6th lightest of the 8 bottles here that publish a weight. Worth knowing: sold by one retailer we track (HydraPak store).
- Capacity
- 500 mL (17 fl oz)
- Weight
- 0.1 lb · 65 g
- Material
- TPU (soft film)
- Diameter
- Not published
- Lid
- Flip-top lid
$33at HydraPak store, Malibu
Check price for the HydraPak SkyFlask™ Speed 500ml at HydraPak store (opens in new tab)Full specs and sources for the HydraPak SkyFlask™ Speed 500mlLowest in-stock price as of Oct 25, 2026.
Stands out
- Collapses when empty
- Fits squeeze filters
- Leakproof
- Dishwasher safe
- Carry loop
Worth knowing
- Sold by one retailer we track (HydraPak store)
Image not availableColors: Charcoal
The HydraPak SkyFlask™ Speed IT 500ml is a 500 mL (17 fl oz) insulated collapsible tpu water bottle that weighs 77 g. Its body is tpu (soft film) and it ships with a flip-top lid.
At 0.2 lb it's the heaviest of the 8 bottles here that publish a weight and the most expensive here at $42. Worth knowing: heaviest bottle in this list.
- Capacity
- 500 mL (17 fl oz)
- Weight
- 0.2 lb · 77 g
- Material
- TPU (soft film)
- Diameter
- Not published
- Lid
- Flip-top lid
$42at HydraPak store, Charcoal
Check price for the HydraPak SkyFlask™ Speed IT 500ml at HydraPak store (opens in new tab)Full specs and sources for the HydraPak SkyFlask™ Speed IT 500mlLowest in-stock price as of Oct 25, 2026.
Stands out
- Vacuum insulated
- Collapses when empty
- Fits squeeze filters
- Leakproof
- Dishwasher safe
Worth knowing
- Heaviest bottle in this list
- Sold by one retailer we track (HydraPak store)
HydraPak Mountain Stow™ 500ml
Lowest price
Image not availableColors: Redwood
The HydraPak Mountain Stow™ 500ml is a 350 mL–500 mL (12–17 fl oz) collapsible tpu water bottle. Its body is tpu (soft film) and it ships with a flip-top lid.
It's the least expensive here at $13.93. Worth knowing: HydraPak doesn't publish this bottle's weight.
- Capacity
- 350 mL–500 mL (12–17 fl oz)
- Weight
- Not published
- Material
- TPU (soft film)
- Diameter
- Not published
- Lid
- Flip-top lid
$13.93was $20at HydraPak store, Redwood
Lowest in-stock price as of Oct 25, 2026.
Stands out
- Collapses when empty
- Fits squeeze filters
- Leakproof
- BPA-free
- Carry loop
Worth knowing
- HydraPak doesn't publish this bottle's weight
- Sold by one retailer we track (HydraPak store)
HydraPak Stow™ 1L
Lightest per liter
Image not availableThe HydraPak Stow™ 1L is a 1 L (34 fl oz) collapsible tpu water bottle that weighs 51 g. Its body is tpu (soft film) and it ships with a flip-top lid.
It's the fifth lightest of the 8 bottles here that publish a weight. Worth knowing: sold by one retailer we track (HydraPak store).
- Capacity
- 1 L (34 fl oz)
- Weight
- 0.1 lb · 51 g
- Material
- TPU (soft film)
- Diameter
- Not published
- Lid
- Flip-top lid
$17.60was $22at HydraPak store, Redwood
Lowest in-stock price as of Oct 25, 2026.
Stands out
- Ultralight: 51 g per liter
- Collapses when empty
- Fits squeeze filters
- Carry loop
Worth knowing
- Sold by one retailer we track (HydraPak store)
Image not availableThe HydraPak Stow™ 500ml is a 350 mL–1 L (12–34 fl oz) collapsible tpu water bottle. Its body is tpu (soft film), it ships with a flip-top lid and its opening is 28 mm.
Worth knowing: HydraPak doesn't publish this bottle's weight.
- Capacity
- 350 mL–1 L (12–34 fl oz)
- Weight
- Not published
- Material
- TPU (soft film)
- Diameter
- Not published
- Lid
- Flip-top lid
$20at HydraPak store, Mammoth
Check price for the HydraPak Stow™ 500ml at HydraPak store (opens in new tab)Full specs and sources for the HydraPak Stow™ 500mlLowest in-stock price as of Oct 25, 2026.
Stands out
- Collapses when empty
- Fits squeeze filters
- Carry loop
Worth knowing
- HydraPak doesn't publish this bottle's weight
- Sold by one retailer we track (HydraPak store)
Questions, answered from the data
What are the lightest HydraPak water bottles?
The HydraPak Mountain Stow™ 350ml is the lightest at 0.1 lb (35 g), by manufacturer spec (2 of the 10 bottles don't publish a weight).
What's the cheapest option?
The HydraPak Mountain Stow™ 500ml, with a lowest in-stock price of $13.93 this week.
About this list
This page includes every HydraPak water bottle in our database, ordered by capacity. “At a glance” picks compare these bottles with each other only. To compare across brands, use the water bottle search.
Specs come from HydraPak’s product pages 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. This is a spec comparison, not a hands-on review. Read our methodology.