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.

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
16oz Soft Touch Sip-N-Lok™ Travel Coffee Tumbler

Pitch Black

Sage Green

Shaded Teal

16oz Soft Touch Sip-N-Lok™ Travel Coffee Tumbler

Regular price $24.99

Regular price Sale price $24.99
Unit price per
32oz Tumbler With Handle 2 Pack

Honeycomb/Hot Pink

Crystal Teal/ Cool Gray

32oz Tumbler With Handle 2 Pack

Regular price $34.99

Regular price Sale price $34.99
Unit price per
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 Straw Bottle 2 Pack

Lime Slushy/Cotton Candy

Cookie Monster/Elephant Cake

16oz Kids Straw Bottle 2 Pack

Regular price $28.99

Regular price Sale price $28.99
Unit price per
12oz Food Jar 2 Pack

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
Can Cooler 2 Pack

Pink Salt/Ultimate Gray

Dusty Blue/Ultimate Gray

Dusty Blue/Jet Black

Can Cooler 2 Pack

Regular price $35.99

Regular price Sale price $35.99
Unit price per
40oz Bottle 2 Pack w/ Spout Lid + Straw Lid

Cream/Dusk

Black/Rose

40oz Bottle 2 Pack With Spout Lid + Straw Lid

Regular price $38.99

Regular price Sale price $38.99
Unit price per
64oz Straw Bottle

Cool Gray

Purple Sunset

64oz Straw Bottle

Regular price $39.99

Regular price Sale price $39.99
Unit price per
40oz ThermoTumbler™ 2 Pack

Indigo/Optic White

Future Dusk/Circular Gray

40oz ThermoTumbler™ 2 Pack

Regular price $42.99

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

Black/Malechite

White/Coral

24oz Bottle 2 Pack With Spout Lid + Straw Lid

Regular price $35.99

Regular price Sale price $35.99
Unit price per
10oz Lowball Tumbler

Jet Black

Dusty Blue

10oz Lowball Tumbler

Regular price $19.99

Regular price Sale price $19.99
Unit price per
12oz Wine Tumbler

Dusty Blue

Jet Black

12oz Wine Tumbler

Regular price $24.99

Regular price Sale price $24.99
Unit price per
12oz Coffee Mug

Jet Black

Dusty Blue

12oz Coffee Mug

Regular price $24.99

Regular price Sale price $24.99
Unit price per
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