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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
40oz Bottle Bundle With Chug Lid (2 Pack)

Sale

40oz Bottle Bundle With Chug Lid (2 Pack)

Regular price $43.99

Regular price ~~$49.98~~ Sale price $43.99
Unit price per

Sale
Neon Water Bottle With Straw Lid

Electric Eclipse

Sunkissed Coral

Vivid Blue

Neon Water Bottle With Straw Lid

Regular price $34.99

Regular price Sale price $34.99
Unit price per
1.5L Insulated Thermal Bottle

Sale

Pitch Black

Tidal Teal

1.5L Insulated Thermal Bottle

Regular price $27.99

Regular price ~~$39.99~~ Sale price $27.99
Unit price per

Sale