Back to School 2025

Free Shipping Orders $49+ (U.S. Only)

Buy One, Get Customization Free On A Second Item!* Ends 9/2

*Offer valid from 8/29/25 through 9/2/25 at 11:59 PM PT. Buy one item with customization and receive free customization on a second item of equal or lesser value. Discount applies to customization charges only; product prices are not discounted. Limit 10 customized items per order. Only one side of customization is eligible for the discount per item. If both sides are customized, only one side will be discounted. Discount automatically applied at checkout. Offer valid only on purchases made at MyThermoFlask.com. Cannot be combined with other offers or discounts. No adjustments on previous purchases. Terms subject to change without notice.

18oz Water Bottle With Straw Lid

Rocket Blast

Berry Twist

Lime Zest

18oz Water Bottle With Straw Lid

Regular price $24.99

Regular price Sale price $24.99
Unit price per
18oz Glow In The Dark Water Bottle With Straw Lid

Jelly Mint

Retro Blue

Electric Fuchsia

18oz Glow In The Dark Water Bottle With Straw Lid

Regular price $24.99

Regular price Sale price $24.99
Unit price per
12oz Food Jar

Blush Sandstone

Ocean Mist

Desert Bloom

Spring Blossom

Tropical Sunset

Garden Party

Candy Oasis

12oz Food Jar

Regular price $24.99

Regular price Sale price $24.99
Unit price per
20oz Food Jar

Candy Oasis

Blush Sandstone

Ocean Mist

Desert Bloom

Spring Blossom

Tropical Sunset

Garden Party

20oz Food Jar

Regular price $29.99

Regular price Sale price $29.99
Unit price per
14oz Kids Bottle With Straw Lid (2 Pack)

Harbor Grey/Denim

Punch/Eggplant

14oz Kids Bottle With Straw Lid (2 Pack)

Regular price $26.99

Regular price Sale price $26.99
Unit price per
12oz Food Jar (2 Pack)

Sold out

Mountain Spring + Ocean/Ocean + Sunrise

Mint + Sherbet/Tangerine + Mint

12oz Food Jar (2 Pack)

Regular price $39.99

Regular price Sale price $39.99
Unit price per

Sold out
20oz Food Jar (2 Pack)

Mint + Sherbet/Tangerine + Mint

Strawberry + Blush/Lime + Moss

Mountain Spring + Ocean/Ocean + Sunrise

20oz Food Jar (2 Pack)

Regular price $49.99

Regular price Sale price $49.99
Unit price per
16oz Kids Water Bottle With Straw Lid (2 Pack)

Red Robin/Blue Jay

Aquamarine/Storm Pink

Starling/Oriole

Blueberry/Wolf Grey

16oz Kids Water Bottle With Straw Lid (2 Pack)

Regular price $28.99

Regular price Sale price $28.99
Unit price per
14oz 2-in-1 Snack and Sip Tritan™ Bottle

Cars

Sharks

Sweets

Unicorns

14oz 2-in-1 Snack and Sip Tritan™ Bottle

Regular price $14.99

Regular price Sale price $14.99
Unit price per

Your cart is empty

Your cart

Estimated total

Buy One, Get Customization Free On A Second Item!* Ends 9/2

Collection: Back to School 2025

18oz Water Bottle With Straw Lid

18oz Water Bottle With Straw Lid

18oz Glow In The Dark Water Bottle With Straw Lid

18oz Glow In The Dark Water Bottle With Straw Lid

12oz Food Jar

12oz Food Jar

20oz Food Jar

20oz Food Jar

14oz Kids Bottle With Straw Lid (2 Pack)

14oz Kids Bottle With Straw Lid (2 Pack)

12oz Food Jar (2 Pack)

12oz Food Jar (2 Pack)

20oz Food Jar (2 Pack)

20oz Food Jar (2 Pack)

18oz Water Bottle With Straw Lid

18oz Water Bottle With Straw Lid

18oz Glow In The Dark Water Bottle With Straw Lid

18oz Glow In The Dark Water Bottle With Straw Lid

12oz Food Jar

12oz Food Jar

20oz Food Jar

20oz Food Jar

14oz Kids Bottle With Straw Lid (2 Pack)

14oz Kids Bottle With Straw Lid (2 Pack)

12oz Food Jar (2 Pack)

12oz Food Jar (2 Pack)

20oz Food Jar (2 Pack)

20oz Food Jar (2 Pack)

16oz Kids Water Bottle With Straw Lid (2 Pack)

16oz Kids Water Bottle With Straw Lid (2 Pack)

14oz 2-in-1 Snack and Sip Tritan™ Bottle

14oz 2-in-1 Snack and Sip Tritan™ Bottle

Buy One, Get Customization Free On A Second Item!* Ends 9/2

Country/region

Collection: Back to School 2025

Filter and sort

Filter