All-For-Customization

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.

16oz Beer Tumbler

Dusty Blue

Jet Black

16oz Beer Tumbler

Regular price $21.99

Regular price Sale price $21.99
Unit price per
32oz Pet Bottle

Sold out

Ultimate Grey

Dusty Blue

32oz Pet Bottle

Regular price $29.99

Regular price Sale price $29.99
Unit price per

Sold out
12oz Standard Can Cooler

Dusty Blue

Jet Black

Pink Salt

Ultimate Grey

12oz Standard Can Cooler

Regular price $19.99

Regular price Sale price $19.99
Unit price per
12oz Slim Can Cooler

Pink Salt

Dusty Blue

Ultimate Grey

Jet Black

12oz Slim Can Cooler

Regular price $19.99

Regular price Sale price $19.99
Unit price per
16oz Can Cooler

Ultimate Grey

Pink Salt

Dusty Blue

Jet Black

16oz Can Cooler

Regular price $21.99

Regular price Sale price $21.99
Unit price per
40oz Bottle w/ Chug Lid

Strawberry

Sky

Onyx/Steel

40oz Bottle With Chug Lid

Regular price $24.99

Regular price Sale price $24.99
Unit price per
16oz Kids Water Bottle 2 Pack w/ Straw Lid

Red Robin/Blue Jay

Aquamarine/Storm Pink

Starling/Oriole

Blueberry/Wolf Grey

16oz Kids Water Bottle 2 Pack With Straw Lid

Regular price $28.99

Regular price Sale price $28.99
Unit price per
14oz Kids Bottle 2 Pack w/ Straw Lid

Harbor Grey/Denim

Punch/Eggplant

14oz Kids Bottle 2 Pack With Straw Lid

Regular price $26.99

Regular price Sale price $26.99
Unit price per
40oz Bottle 2 Pack w/ Spout Lid

Ice Grey/Azure

Arctic/Grasshopper

Stone/Midnight

Onyx/Splash

40oz Bottle 2 Pack With Spout Lid

Regular price $38.99

Regular price Sale price $38.99
Unit price per
40oz Bottle 2 Pack w/ Four Lid Combo

Ice Grey/Pine

Superior Blue/Mauve

40oz Bottle 2 Pack With Four Lid Combo

Regular price $42.99

Regular price Sale price $42.99
Unit price per
24oz Bottle 2 Pack w/ Spout Lid

Mayan Blue/Black

Strawberry/Arctic

24oz Bottle 2 Pack With Spout Lid

Regular price $35.99

Regular price Sale price $35.99
Unit price per
Bottle w/ Chug Lid and Straw Lid

Plum

Black

White

Capri

Cobalt

Bottle With Chug Lid and Straw Lid

Regular price $22.99

Regular price Sale price $22.99
Unit price per