Accessories

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.

32oz Straw Tumbler O-Ring and Gasket Set

Clear

32oz Straw Tumbler O-Ring and Gasket Set

Regular price $3.99

Regular price Sale price $3.99
Unit price per
Swivel Handle Straw Lid Breather Valve - Five Pack

Clear

Swivel Handle Straw Lid Breather Valve - Five Pack

Regular price $3.99

Regular price Sale price $3.99
Unit price per
Fixed Handle Straw Lid Breather Valve - Five Pack

Clear

Fixed Handle Straw Lid Breather Valve - Five Pack

Regular price $3.99

Regular price Sale price $3.99
Unit price per
Chug and Spout Lid O-Ring Set - No Tabs

Clear

Chug and Spout Lid O-Ring Set - No Tabs

Regular price $3.99

Regular price Sale price $3.99
Unit price per
Straw Lid O-Ring- Two Pack

Clear

Straw Lid O-Ring- Two Pack

Regular price $3.99

Regular price Sale price $3.99
Unit price per
Travel Mug Lid O-Ring and Sip Plug Set

Clear

Travel Mug Lid O-Ring and Sip Plug Set

Regular price $3.99

Regular price Sale price $3.99
Unit price per
Chug and Spout Lid O-Ring Set - With Tabs

Clear

Chug and Spout Lid O-Ring Set - With Tabs

Regular price $3.99

Regular price Sale price $3.99
Unit price per
24oz Packable Bottle Sling

Sold out

Onyx/Steel

24oz Packable Bottle Sling

Regular price $12.99

Regular price Sale price $12.99
Unit price per

Sold out
40oz Bottle Sling

Onyx/Steel

40oz Bottle Sling

Regular price $24.99

Regular price Sale price $24.99
Unit price per
32/40oz Bottle Sling

Black

32/40oz Bottle Sling

Regular price $16.99

Regular price Sale price $16.99
Unit price per
Wine Bottle Ice Jacket

Ice Grey

Wine Bottle Ice Jacket

Regular price $24.99

Regular price Sale price $24.99
Unit price per

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

Collection: Accessories

32oz Straw Tumbler O-Ring and Gasket Set

32oz Straw Tumbler O-Ring and Gasket Set

Swivel Handle Straw Lid Breather Valve - Five Pack

Swivel Handle Straw Lid Breather Valve - Five Pack

Fixed Handle Straw Lid Breather Valve - Five Pack

Fixed Handle Straw Lid Breather Valve - Five Pack

Chug and Spout Lid O-Ring Set - No Tabs

Chug and Spout Lid O-Ring Set - No Tabs

Straw Lid O-Ring- Two Pack

Straw Lid O-Ring- Two Pack

Travel Mug Lid O-Ring and Sip Plug Set

Travel Mug Lid O-Ring and Sip Plug Set

Chug and Spout Lid O-Ring Set - With Tabs

Chug and Spout Lid O-Ring Set - With Tabs

24oz Packable Bottle Sling

24oz Packable Bottle Sling

40oz Bottle Sling

40oz Bottle Sling

32/40oz Bottle Sling

32/40oz Bottle Sling

Wine Bottle Ice Jacket

Wine Bottle Ice Jacket

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

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