September 18, 2025

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10 Best vacuum flasks of 2025

Save up to 29% off

Best Choice

1

STANLEY
Stanley Heritage Classic Vacuum Bottle with Handle 1.1 qt | Wide Mouth with Leakproof Cup Lid | Keep Drinks Hot or Cold for Travel | Insulated Stainless Steel Thermos | BPA-Free | Hammertone Green
Main highlights

Superior Insulation Performance
Keeps liquids hot or cold for up to 24 hours.

Ideal for Outdoor Adventures
Perfect for camping, hiking, and travel with its durable design.

Highly Praised Insulation
Customers love the effective temperature retention for beverages.
Key specs
- cap type:Screw Cap
- product dimensions:4.5W x 14.3H
- color:Hammertone Green
- material:Stainless Steel
- special feature:Insulated Lid, BPA-free
9.7

Exceptional

Our Rating

9.9
Temperature control

9.9
Watertight

9.7
Precision
How do we rank?

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Based on millions of stores and reviews

Shoppers influence our rankings
Analyzing top stores
Value for Money

2

RAYMYLO
RAYMYLO Insulated Water Bottle 64 oz, Triple Wall Vacuum Stainless Steel (Cold for 48 Hrs), Leak Proof & Non-BPA, Half Gallon Water Flask Jug with Paracord Handle & Straw Spout Lids, Magic Black
Main highlights

Triple Wall Insulation:
Raymylo 64 oz water bottle keeps drinks cold for 48 hours and warm for 24 hours with copper-plated triple wall vacuum insulation.

Perfect for Outdoor Adventures:
Ideal for camping, hiking, and sports, thanks to its paracord handle with compass and carabiner.

Highly Praised Cold Retention:
Customers love its ability to keep water ice cold even in extreme temperatures for extended periods.
Key specs
- color:Magic Black
- material:Stainless Steel
- bottle type:Insulated Water Bottle
- special feature:Sweatproof, Cold 48 Hours
- capacity:64 Fluid Ounces
9.5

Excellent

Our Rating

9.7
Watertight

9.5
lasts a long time

9.5
Durability
3

THERMOS
THERMOS Stainless King Vacuum-Insulated Beverage Bottle, 40 Ounce, Matte Stainless Steel
Main highlights

Temperature Retention
THERMOS vacuum insulation keeps beverages hot or cold for 24 hours, ideal for long trips.

Outdoor Adventures
Perfect for outdoor adventures, road trips, and group outings with 40-ounce capacity.

Superior Heat Retention
Customers praise its ability to keep drinks hot for extended periods.
Key specs
- cap type:Screw Cap
- product dimensions:4.3W x 12.3H
- color:Matte Steel
- material:Stainless Steel
- special feature:Sweatproof, Twist and Pour, Dishwasher Safe, Vacuum Insulated
9.4

Excellent

Our Rating

9.7
Watertight

9.7
materials Quality

9.5
lasts a long time
4

QWORK

QWORK 1000ML Buchner Funnel Kit Filter Flask Set, 1L Vacuum Flask 80mm Funnel, Borosilicate Glass Heavy Wall Filtering Flask
9.3

Excellent

Our Rating
5

THERMOS
THERMOS Stainless King Vacuum-Insulated Compact Bottle, 16 Ounce, Matte Steel

29% Off
Main highlights

Temperature Retention
THERMOS vacuum insulation keeps beverages hot for 18 hours or cold for 24 hours.

Outdoor Adventures
Ideal for outdoor activities, ensuring drinks stay at the right temperature.

Leak-Proof Performance
Customers praise its ability to prevent leaks and maintain heat.
Key specs
- cap type:Screw Cap
- product dimensions:3W x 9.7H
- color:Stainless
- material:Stainless Steel
- special feature:portable
9.1

Excellent

Our Rating

9.9
materials Quality

9.9
Temperature control

9.7
Watertight
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6

GearRoot
68oz Coffee Carafe Airpot Insulated Coffee Thermos Urn Stainless Steel Vacuum Thermal Pot Flask for Coffee, Hot Water, Tea, Hot Beverage - Keep 12 Hours Hot, 24 Hours Cold
Main highlights

Temperature Retention
Advanced vacuum insulation keeps beverages hot for 12 hours, cold for 24 hours.

Daily Use Versatility
Ideal for serving coffee, tea, and other beverages at home or office.

User-Friendly Design
Customers praise the easy one-handed pouring mechanism.
9.0

Excellent

Our Rating

9.1
Watertight

8.9
Fashion

8.7
dispense easily
7

IRON °FLASK
IRON °FLASK Camping & Hiking Hydration Flask with 3 Lids - Stainless Steel, Double Walled & Vacuum Insulated Water Bottle - Leak Proof & BPA Free (Midnight Black, Straw - 40 oz)
Main highlights

Superior Insulation Performance
Keeps beverages cold for 24 hours, hot for 12 hours.

Perfect for Outdoor Adventures
Ideal for gym use, hiking, and long work shifts.

Highly Praised Leak-Proof Design
Customers love the leak-proof lids and durable build.
8.8

Very Good

Our Rating

9.7
Giftable

9.7
easy to consume

9.7
Simple to clean
8

RUBYFLASK
RUBYFLASK 32oz Insulated Water Bottle with Straw, Stainless Steel Metal Vacuum Water Flask, Large Thermos Water bottle with Leakproof 3 Lids for Travel, Camping, Gym Sports Indigo Black

10% Off
Main highlights

Superior Temperature Control
Double-wall vacuum insulation keeps drinks hot for 12 hours or cold for 24 hours.

Perfect for Active Lifestyles
Ideal for gym, camping, and travel with its large capacity and portability.

Highly Praised Insulation
Customers appreciate its ability to maintain drink temperatures even in extreme conditions.
Key specs
- color:Indigo Black
- material:Stainless Steel
- bottle type:Straw Cap
- special feature:Cold 24 Hours
- capacity:2 Pounds
8.5

Good

Our Rating

9.9
easy to consume

9.9
Watertight
9

THERMOS
Thermos Vacuum Insulated 16 Ounce Compact Stainless Steel Beverage Bottle
Main highlights

Temperature Retention
Thermos vacuum insulation keeps beverages hot for 12 hours or cold for 24.

Ideal for On-the-Go
Compact design with built-in cup, perfect for travel and work.

Highly Praised Heat Retention
Customers love its ability to keep drinks hot for hours.
Key specs
- cap type:Screw Cap
- product dimensions:2.6W x 10H
- color:Stainless Steel
- material:Stainless Steel
- special feature:Alcohol-Free
8.4

Good

Our Rating

9.7
worth the money

9.7
Watertight

9.7
Easy to grip
10

Hydrapeak
Hydrapeak 25oz Stainless Steel Vacuum Insulated Thermos Food Jar | Thermos for Hot Food and Cold Food, Wide Mouth Leak-Proof Soup Thermos for Adults, 10 Hours Hot and 16 Hours Cold (Black)
Main highlights

All Day Insulation
Hydrapeak's double wall vacuum insulation keeps contents hot for 10 hours and cold for 16 hours, making it ideal for all-day use.

Ideal for On-the-Go Meals
Perfect for packing hot or cold meals, with a wide mouth for easy access and a sturdy folding handle for effortless carrying.

Praised Feature: Easy to Use
Customers love the wide mouth design, making it easy for children to eat from and for parents to clean.
Key specs
- features:Cold 24 Hours, Leak Proof, BPA Free, Double Wall, Hot 12 Hours
- dishwasher safe:No
- size:25oz
- shape:Round
- material:18/8 stainless steel
8.3

Good

Our Rating

9.7
lasts a long time

9.7
Watertight

9.3
Simple to clean

10 Best vacuum flasks of 2025

1

Stanley Heritage Classic Vacuum Bottle with Handle 1.1 qt | Wide Mouth with Leakproof Cup Lid | Keep Drinks Hot or Cold for Travel | Insulated Stainless Steel Thermos | BPA-Free | Hammertone Green

9.9

9.9

9.7

How do we rank?

How do we rank?

Analyzing top stores

2

RAYMYLO Insulated Water Bottle 64 oz, Triple Wall Vacuum Stainless Steel (Cold for 48 Hrs), Leak Proof & Non-BPA, Half Gallon Water Flask Jug with Paracord Handle & Straw Spout Lids, Magic Black

9.7

9.5

9.5

3

THERMOS Stainless King Vacuum-Insulated Beverage Bottle, 40 Ounce, Matte Stainless Steel

9.7

9.7

9.5

4

QWORK 1000ML Buchner Funnel Kit Filter Flask Set, 1L Vacuum Flask 80mm Funnel, Borosilicate Glass Heavy Wall Filtering Flask

5

THERMOS Stainless King Vacuum-Insulated Compact Bottle, 16 Ounce, Matte Steel

9.9

9.9

9.7

6

68oz Coffee Carafe Airpot Insulated Coffee Thermos Urn Stainless Steel Vacuum Thermal Pot Flask for Coffee, Hot Water, Tea, Hot Beverage - Keep 12 Hours Hot, 24 Hours Cold

9.1

8.9

8.7

7

IRON °FLASK Camping & Hiking Hydration Flask with 3 Lids - Stainless Steel, Double Walled & Vacuum Insulated Water Bottle - Leak Proof & BPA Free (Midnight Black, Straw - 40 oz)

9.7

9.7

9.7

8

RUBYFLASK 32oz Insulated Water Bottle with Straw, Stainless Steel Metal Vacuum Water Flask, Large Thermos Water bottle with Leakproof 3 Lids for Travel, Camping, Gym Sports Indigo Black

9.9

9.9

9

Thermos Vacuum Insulated 16 Ounce Compact Stainless Steel Beverage Bottle

9.7

9.7

9.7

10

Hydrapeak 25oz Stainless Steel Vacuum Insulated Thermos Food Jar | Thermos for Hot Food and Cold Food, Wide Mouth Leak-Proof Soup Thermos for Adults, 10 Hours Hot and 16 Hours Cold (Black)

9.7

9.7

9.3

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