Oknow Tumbler

It's a tumbler.

You pour water inside, close the lid, and drink.

Also got text printed big big to remind you to hydrate while studying/working. 

• 700ml
• Matte black
• Stainless steel, suitable for hot and cold beverages
• Reusable metal straw
• 20.4cm x 9cm

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Incl. of FREE tracked shipping (for SG orders).

International delivery is available.

First batch of orders will be mailed out by 9th February, 23:59.