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UNDER THE SEAMega Mug 30oz




Under the Sea Mega Mug (30oz)

Mega sips, mega chill! 🧊 Splish splash into a mermaid's life under the sea in this fun hydrangea and mint design!

You asked, we listened! Grab our fan-fave Mega Mug in a smaller, 30oz size. A cup holder-friendly frame, a comfort-grip handle, and a plastic straw with a silicone flexi-tip make hydrating easier than ever.


  • Holds up to 30oz
  • Keeps drinks cold 24+ hours and hot 3+ hours
  • Comfort-grip plastic handle
  • Fits most standard cup holders
  • Double-walled, vacuum-sealed, and copper-plated
  • Condensation-free and non-breakable
  • Constructed of 304-18/8 stainless steel
  • Built-in silicone coaster base prevents slips, drips, and scratches
  • Includes a Large Lid with removable slider
  • Includes a Mega Mug plastic straw with a removable silicone flexi-tip

All of our prints are hand applied therefore slight variations will occur.


Measures: 8.9" H x 5" W (lid included)

Total straw length including silicone flexi-tip: 11"

Clear plastic straw length: 7.8"

Base: 2.7" in diameter

Weighs: 1lb 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

Visit Care Instructions for more care and use information!

Customer Reviews

Based on 110 reviews
C.G. (Saint Charles, US)
Perfect Gift!

Gave to a co-worker... She loves the pattern and is even more impressed with how comfortable the handle is and how long her beverages stay cold!

S.B. (Ennis, US)
Love it

Love my new cup be ordering again

A.S. (Macomb, US)
So beautiful

I’m a swig gal all the way and this one is just beautiful! I’ve gotten so many compliments on it and proud to say “it’s a swig!”


Love Love it

G.J. (Fayetteville, US)
'Great Maga Mug!

I bought this mug for my daughter. She loves it. She drinks a lot of water, and this is perfect. She is also a beach lover so the design is perfect!!

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