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Rambler 12oz Colster Can Insulator

4.4934383202099735 out of 5 stars
762 Reviews

Out of Stock

Don't worry though, we have a lot more Cups, Mugs, & Flasks in stock than that.

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Why We Like The Rambler 12oz Colster Can Insulator

Whether we're trying to keep our soda from getting hot on the beach or preventing a crisp beer from freezing while we ice fish, YETI's innovative insulating tech is here to save the day. The Rambler 12oz Colster Can Insulator wraps our beverage in double-wall insulation, keeping it at just the right temperature to enjoy, no matter the surrounding conditions.


  • Handheld can cooler keeps 12-ounce beverages perfectly chilled
  • Stainless steel construction with double-wall insulation
  • Gasket lid keeps cans secured inside the cooler
  • Updated design with new gasket size and sleeker silhouette
  • Holds one 12-ounce aluminum can or one 12-ounce glass bottle
  • Item #YETZ04N
18/8 stainless steel
fits 12oz cans
double-wall vacuum
1 12oz Rambler Colster, gasket lid
3.1 x 4.9in
Claimed Weight
Manufacturer Warranty
5 years

Overall Rating

4.5 based on 762 ratings

Review Summary

1 Stars - 38 reviews
2 Stars - 29 reviews
3 Stars - 43 reviews
4 Stars - 61 reviews
5 Stars - 591 reviews

What do you think about this product?


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5 out of 5 stars

June 7, 2023

Works great but need to make more in Rescue Red.

Works great my friends and I love them. But yeti please you need to make more in RESCUE RED!!!!


Originally reviewed on

4 out of 5 stars

June 1, 2023


Love this ! and I love the fact that I can match it with my 26th and straw cup for the days where I need hydration and a little fun in my drink cooler. It’s orange is my new favorite color and I would be ecstatic if it came in the colster also


Originally reviewed on

2 out of 5 stars

May 22, 2023

Lid doesn’t get tight

The lid will not tighten, just strips out and keeps spinning. It keeps the drinks cold, just not secure. I have loved all of my yeti products but I could not recommend spending money on this. Very poor design from such a durable company.

Jordon S

Originally reviewed on

5 out of 5 stars

April 27, 2023

I am a believer!

The last swallow or two used to be warm and nasty, not with the Colster!!!


Originally reviewed on

5 out of 5 stars

April 27, 2023

Love the cups, do better on color selections!!

First off the product is great. Since we aren't allowed to "solicit ideas" per your policy I'm just going to have to put them out in the open vs a private email.. You guys are struggling with the color selections.. not sure why because there are 1000's of variations you can choose from these days with modern technology FYI. The red has already been played like 4 yrs ago, I have one... There are multiple other colors that are just TOO CLOSE to each other it's like an afterthought.. is the color guy sleeping? Do better w the colors. Dont be lame. Also, a new version of the old camo will kill, maybe digi camo.

The Ram

Originally reviewed on

5 out of 5 stars

April 20, 2023

Can coasters are the best

I have 12 can coasters, and a few ramblers, a couple tumblers and 2 coolers. The can coasters are my favorite and most used. I just wish can coasters for the mini cans of soda were a thing. For the 7.5oz cans.

user image

Originally reviewed on

5 out of 5 stars

April 12, 2023

Fix your loose colster lid/rim to stay tight

To all people with loose rim/lids on the colster. Replace the cardboard circle that goes in the bottom like came in it originally. I take cardboard and cut out a circle and drop it in. This will raise the can up a touch and lid gos on tight pressing down on can. The cardboard give it resistance and lid and can dont move. Have Never had an issue as long as you keep a cardboard circle in bottom. Make sure its thick enough to raise can up you may need to press down on can a little if up to high. Replace every few months. Love these colsters I got one a year ago and now own two both with the og rim not the square off fat rim can't stand that. Stay with og rims. I won't purchase one with square off rim/lid. Hope that helps yall. Good day my friends

user image
Charles Hooks

Originally reviewed on

5 out of 5 stars

April 7, 2023

Like easy twist cap

I have 7 and love them! I WANT TO BUY A CANOPY GREEN


Originally reviewed on

5 out of 5 stars

March 14, 2023

Great features

I recommend this product I found it extremely useful and one of the best at managing cold and hot drinks for almost 24hours in most cases.

Bob 27

Originally reviewed on

4 out of 5 stars

January 24, 2023

LOVE, but missing one thing

Love these and in all sizes. If they add a super powerful magnet to one side of ANY of the Ramblers these would get a 5 star review from me.


Originally reviewed on