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Shimmer Mermazing Slim Tumbler (12oz)

Shimmer Mermazing Slim Tumbler (12oz)


Shimmer Mermazing Slim Tumbler (12oz)

Get going and get sipping! 💧 Make a splash with the iridescent hues of this shimmer finish!

Go handle-free and hand-friendly with our 12oz Slim Tumbler. This slim shape cup is the perfect size for your morning commute coffee, cup holder friendly for a rush hour refresh, and the ideal pour for an evening cocktail.


  • Holds up to 12oz
  • Keeps drinks cold 9+ hours and hot 3+ hours
  • Triple insulation technology: double-walled, vacuum-sealed and copper-plated
  • Condensation free and nonbreakable
  • Constructed of 5mm 304-18/8 stainless steel
  • Fits most standard cup holders
  • Slip-free, scratch-free and noise-free silicone base
  • Includes BPA-free, Small Lid with removable slider for cleaning
  • Tall Straws sold separately
  • Bonus! Can also be used as a Skinny Can Cooler

Use our Accessory Fit Guide to help find the right accessory for your Swig!


Measures: 6.25” H x 2.75” W (lid included)

Base: 2.75” in diameter

Weighs: 0.2lb when empty


When caring for your Swig:

  • While this vessel is dishwasher safe, we recommend handwashing to maintain the best possible finish
  • Never use bleach or abrasive cleaners containing chlorine
  • Do not put in the microwave
  • Do not overfill with hot liquids and keep out of reach of children when filled with hot liquids
  • Always make sure lid is tightly secured before drinking

Looking for more care and use information? Click here for details on how to care for your Swig.

Customer Reviews

Based on 35 reviews
C.H. (Lawrence, US)
Cute, but doesn’t keep drink hot enough

This cup is cute and seems high quality, but it should advertise keeping drinks warm for up to three hours, not hot.
The lid is also not spill resistant and the beverage leaks out between the cup and the lid.

Disappointing purchase.

Hi Christina,

Thanks for reaching out, and so sorry to hear you may have a damaged item! Please submit a damage claim here( and we can get the review process started for you right away. We require images of the damaged item(s) to move forward in the warranty process, and receipts are required for specific items.

Please note, not all defects are covered under our warranty, such as normal wear and tear to exterior finishes and damage due to everyday use. At this time, we are unable to accept international damage/warranty claims from purchases made outside of If you purchased your Swig through an international retailer, please contact that retailer directly about a replacement. 

The Swig Life Team

R.P. (Birmingham, US)

Was surprised that it also came with an insert for a can.

S.R. (Charleston, US)
Perfect gift!

I bought the slim tumbler in Black Walnut for my brother-in-law's Christmas gift, and it was perfect! The color/pattern is great, and he can use it for a beer can holder or for a beverage.

S.B. (Medina, US)
Love this design

Love this new design

M.S.J. (Port of Spain, TT)

Loving my Swig! Keeps my drinks cold! Pattern colours are great...only thing missing is a stainless steel straw!
On the hunt for more!

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Swig Accessory Fit Guide