To-Go Cup Insulator Your To-Go Frost Buddy

Oki Celsius

4.8/5 (581)

Double-Walled

Universal Fit

Non-Slip Base

Cup Holder Compatible

Color Blush
Limited Time Sale

Stop throwing away half your iced coffee because the ice melted and it tastes like water, and actually enjoy every last sip the way it was meant to taste.

Oki Celsius is used by iced coffee lovers, daily coffee shop regulars, and anyone who is tired of paying $7 for a drink that is watered down before they even get home.

The only to-go cup insulator that works with any cup from any brand, it fits small, medium, and large cups from McDonald's, Dunkin', Starbucks, and everywhere else.
Does Oki Celsius come with a tumbler lid?

Older versions came with a separate lid.

However after hearing from thousands of our customers, we found that almost nobody was actually using it. Therefore we stopped including it so that you do not have to you pay for something that you won't use.

Your takeout cup already comes with its own lid and straw and Oki Celsius works perfectly around that. No extra lid to carry, wash, or lose.

I saw a color on social media that I can't find here.

We regularly drop limited edition colors and they sell out really fast.

If you spotted something on our social media that you cannot find on our site, it has most likely already sold out.

The good news is that the designs we have right now also include limited edition colors, so grab yours before they are gone too!

30 Day Guarantee

Every component of the Oki Celsius is held to the highest manufacturing standard. We're so confident in our build that if you're not fully satisfied within 30 days, you can return it for a full refund.

Full refund 30-day window No questions asked
Stephanie Janssen
United States United States

I LOVE this. It does exactly what it says it does. I got a large dunkin coffee yesterday at 8am. I drank it but because of who I am as a person I left the cup in the sleeve. This morning at 8am I went to remove the cup from the sleeve and THERE WAS STILL ICE IN THE CUP. It managed to keep ice in a plastic Dunkin cup frozen for 24 full hours. Let me just say I was not disappointed AT ALL.

Fits your favorite drive-through cups

YOUR ICED COFFEE'S NEW BEST BUDDY

Drop in your cup from any drive-through. Fits small, medium, and large cups — no more watered-down drinks.

STARBUCKS cup shown inside the tumbler

FITS S–L

STARBUCKS

Grande, Venti, Trenta

DUNKIN' cup shown inside the tumbler

FITS M–XL

DUNKIN'

Medium, Large, XL

McDONALD'S cup shown inside the tumbler

FITS M–L

McDONALD'S

Medium, Large

CHICK-FIL-A cup shown inside the tumbler

FITS M–L

CHICK-FIL-A

Medium, Large

DUTCH BROS cup shown inside the tumbler

FITS M–L

DUTCH BROS

Medium, Large

ANY DRIVE-THROUGH cup shown inside the tumbler

FITS S–L

ANY DRIVE-THROUGH

S, M, L cups

Fits S, M, L Cups Leak-Proof Lid Cup Holder Friendly Hot & Cold BPA-Free
SIMPLE AS 1-2-3

HOW IT WORKS

Get Your Drink

Grab your favorite iced coffee, smoothie, or any to-go drink.

Drop It In

Place your cup inside the Oki Celsius — it fits S, M, and L cups.

Stay Cold All Day

Enjoy ice-cold drinks for 24+ hours with no sweat and no mess.

WHY OKI CELSIUS?

SEE THE DIFFERENCE

FeatureOKI CELSIUSREGULAR TUMBLERNO INSULATOR
Fits drive-through cupsYesNoNo
Keeps cold 12+ hoursYesYesNo
Cup holder friendlyYesSomeYes
No condensationYesYesNo
22+ designsYesNoNo
No pouring requiredYesNoYes
  • 5 stars: 449 (77%)
  • 4 stars: 127 (22%)
  • 3 stars: 5 (1%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
R
Reese Norris
Gorgeous

Not only is this gorgeous, but it leaves my drinks sweat proof, and ice lasts all day.

L
Lena Rayfield
Oki Celsius

Love the Oki Celsius!

R
Robin Dalton
Great tumbler

I just received my third Oki Celsius with a fourth on the way. I have chronic illnesses and keep water by me at all times. These have been so great at keeping my water cold. I wake up in the morning and my water is still cold. I just bought one for the car. Works great at keeping coffee hot too.

V
Valerie Stone
Must have for people on the go

This works so well!

L
Lois Warner
Perfect

I love it fit my Diet Coke from Kwik Trip perfect

J
Julie Wells
Get one! Great tumbler!

These are the best tumblers! I have bought one for myself, and several for gifts! Very good keeping stuff hot or cold as advertised! Worth it! Get one!!

L
Lesley Padilla
Worth it

I love when a product actually delivers. This thing fits small, medium, large, tall, grande, venti, literally everything (up to 30-32oz) And it keeps my drink iced for like 10 hours. First time I tried it, I got my morning coffee at 7am and it was still cold and had some ice at 5pm. I can’t go without it now, it’s so convenient because you don’t have to wash it as often as normal tumblers.

W
Wendy Owusu
Great Product

It does the job!!

W
Wren Underwood
Well Insulated!

Keeps drinks very cold. Ice doesn't melt.

L
LuAnne Kesecker
Cold drinks and no melting ice!

I love the look and it works too! Keeps my drinks cold workout the ice melting.

V
Valerie Carter
Gorgeous

This cup is gorgeous! It actually looks like it has texture. It looks just like a fawns coat. My new favorite!

P
Peter Stills
This cup works.

I love my Oki Celsius. I have one in the truck one in the camper and one in the house. I first used one on vacation it was a gift from my mom it was in the 80s outside and I left my frozen coffee in the car thinking we would return soon five hours later I got into a hot car only to find my drink still frozen. Wont travel without it. My husband likes the one for cans and bottles his soda and water stay cold even in long drives.

M
Michelle Thrasher
Love!

Exactly as advertised! Will buy again.

K
Kelly Brennan
Keeps the drinks cold for 12+ hours

This one really works and keeps my iced drinks cold though an entire 12 hour shift. This works just as well as a name brand one I purchased for the other brand. Highly recommend!

M
Madison Kight
Best cup ever!!

I love this cup. Its one lid makes soo easy to use and I dont need multiple lids for one cup in love I want more!!!!! Easy cleaning as well completely comes apart. Its leak-proor done tested that out. And the size is perfect for me. and the color is beautiful

V
Vickie George
Like it

It is great

R
Rebecca Lawson
Great item

I left me coffee in this cup over night the next morning I realized I forgot my coffee and it was still cold and had the ice in it! Great item!

N
Nora Keim
Tumbler

Love it keeps it cold all day

R
Remy Underwood
Love the Oki Celsius

Absolutely obsessed with the Oki Celsius. I work long shifts and work out of my work and sip my drink throughout the day prior to getting the Oki Celsius my drinks would get warm without a couple hours. The Oki Celsius keeps my drink cold throughout my entire shift. Once again I highly recommend the Oki Celsius.

J
Jessica Elrod
Awesome

Fits my loaded tea cup. Keeps ice all day

S
Shelley Martin
Impressive

Works great!

F
Francesca Ferrara
No more wiping up or drink not being at temperature

Definitely a game changer when getting a drink out at a restaurant

S
Shelly Hernandez
Amazing

Works great. I got my favorite coffee at 9:30 in the morning on a hundred degree day. I was shopping and in out of the hot car. It still had ice in the cup at 6 p.m.

T
Teresa L Hatton
Keeps drinks cold

Love this color and works great keeping my drinks cold longer!

M
Monica Young
Great

Fits a mcd large cup perfectly and keeps it ice cold for hours! Makes a huge difference with keeping carbonation too

S
Shea Brennan
Love it

Love thisWork in the sun and my ice stayed al day with little melting

J
Jeffrey Barnes
Great Product

I normally do not leave product reviews, but this has met every expectation. No condensation and ice is still intact after several hours.

K
Katrina Becker
No more watered down drinks!

Love this!! My large drink from McDonald's stayed crisp and cold to the last drop. I took 2 hours and 40 minutes to sip on the drink and there was still ice. No more watered down drinks for me!

T
Tanya Collins
Holds the cold very well

I have 2 of the name brand of these and this one is as good, if not better than those. This holds a large cup of pebble ice (or a drink!!) from Sonic for over 12 hours, with some melting of course, but holds a LOT of the ice even in the heat. The quality is very good, loved my color choice too, very nice appearance and weight. Not heavy but nice thickness and durability. I've been using it every day and it hasn't let me down. I always use it with a cup in it but it can be used as a tumbler on its own, I just prefer not to.

J
Jill Kamphaus
Drink chiller

Keeps ice from melting all day!

H
Heather Smith
Works great

This thing works really well. On a super hot day I still had ice by the time my coffee was gone.

L
Laura Castro
Keeps ice!

This works well! On a hot 95 degree beach day, this kept my iced coffee with actual ice cubes for over 6 hours. It’s great for work and I use it in my car to keep a beverage cold when running errands.

K
Karen S. Simpson
What did I do before my first Oki Celsius?

I don’t know what I did before my first Oki Celsius. It keeps my cold drinks super cold for 2 days! Any drink from places like Starbucks, Dunkin, Dutch Bros, any of the fast food chains fits in this drink holder-all drink sizes fit. The Oki Celsius fits in any beverage holder. It comes with a spill proof top so you can use it for hot or cold drinks and the stainless keeps your drink at desired temperature for a long time!! There are so many different colors and prints it makes it difficult to choose one!

B
Brittany Coleman
ICE ICE BABY

Obsessed with this cup. I put my McDonald’s tea down in it and it stays ice cold for over 24hr. Like literally still ice in it. It’s perfect for me because I don’t drink it all in one go and come back to it. The color is not true Tennessee orange and is a little more light/peachy but still cute! It’s good quality. It fits true to description and will hold up to 32oz Wendy’s and McDonald’s large plastic cups but does not of course hold styrofoam

Will my drink stay cold all day?

Yes. The double-walled stainless steel body blocks outside heat from getting to your cup, so your iced coffee stays cold for hours whether you are at your desk, in your car, or running errands.

How long does ice actually last in this?

Most customers report their ice lasting the entire day depending on the weather and how often they open it. Without Oki Celsius, ice in a regular takeout cup starts melting within 30 minutes.

Does this really work like they say?

Yes. Drop your takeout cup in, the silicone ring locks it in place, and the stainless steel body does the rest.

Will my favorite coffee cup fit inside?

Oki Celsius fits small, medium, and large cups from McDonald's, Dunkin', Starbucks, and most other coffee shops. If your cup has a lid and a straw it will fit.

How long will this tumbler last before it breaks?

Oki Celsius is built from double-walled stainless steel so it is made to last. It is not a plastic sleeve that cracks after a few uses. Take care of it and it will last you years.

Will it stop my car cup holder from getting wet from condensation?

Yes. Because the stainless steel body absorbs the condensation instead of letting it pass through, your cup holder stays completely dry.

Will this fit in my car's cup holder?

Yes. Oki Celsius is designed to fit any standard car cup holder. No adapter needed, just drop it in and it sits stable the whole drive.

Have Questions?

Browse our frequently asked questions to find quick answers.