Honest Review: YETI Rambler 12 oz. Colster Can Insulator Review

October 28, 2026•3 min read

As an Amazon Associate I earn from qualifying purchases. This means if you click a link and make a purchase, I may earn a small commission at no extra cost to you. All opinions are entirely my own.


The Short Version

I bought two of these 12 oz YETI Colster can insulators in late June, one in black and one in stainless, right before family came to visit. Living in South Florida, keeping a drink cold instead of sweating through a can is a real asset, and these have delivered every single time, whether it is a beer on the patio or a ginger ale on the beach three hours later. At the time of writing this review, the price is $25.00 for black, though YETI offers several colors ranging from roughly $20 to $35. Shop it on Amazon here

Black and Stainless 12 oz YETI Rambler Colster sitting on a beach
Perfect for keeping beach day beverages cold, in the hot sun!

Why I Bought It

My husband has owned YETI products for years, and even through 12 hour work shifts, his drink has stayed cold from the moment he leaves in the morning until the end of the day. That track record made this an easy decision. With family coming into town who enjoy a 12 oz can of beer, and with my own habit of drinking 12 oz ginger ale or seltzer, I ordered two of these Colsters so we would each have one ready to go. This particular size also comes in a slim version for cans like White Claw or Celsius, if that fits your drink of choice better. See the slim version here


What Is In the Box

You get the YETI Rambler 12 oz Colster itself, designed to fit standard size 12 oz cans. The top twists off, you drop your cold can in, and twist the top back on.

Check current price on Amazon


The Real Life Experience

This Colster works exactly as advertised. A cold can goes in, and hours later when you finally crack it open, it is still cold. We have taken these to the beach more times than I can count, tossing a Celsius, a Monster, or a ginger ale inside before heading out, and after three or four hours sitting in a cooler and then out in direct South Florida sun, the drink inside is still cold when we open it. Even after being open for a couple of hours in the heat, it holds that cold noticeably longer than a bare can ever would.

Easy to twist the top off the 12 oz YETI Rambler Colster
Just twist, insert can, and replace top, it's that easy!

What I Love

The simplicity is what makes this work so well. Twist off, drop your can in, twist back on, and that is the entire process. There is no learning curve and no fussing with it. The insulation performance backs up everything YETI is known for, and after years of watching my husband's drinks stay cold through full work shifts, I expected these to perform well, and they have not disappointed.


What I Would Change

Nothing. YETI is a well established brand for a reason, and this Colster does exactly what it says it will do without any surprises.


Who This Is Perfect For

This is perfect for anyone who drinks 12 oz cans and wants them to actually stay cold, whether that is beer, Coke, Pepsi, ginger ale, or seltzer. If your can of choice is slimmer, like a White Claw or Celsius, the slim version covers that size instead. It is an easy recommendation for beach days, backyard hangouts, or just keeping a can cold on a hot South Florida afternoon.


The Verdict

A simple, well built can insulator that keeps drinks cold for hours, even in direct sun, and lives up to YETI's reputation without a single complaint. Between my husband's years of daily use and our own beach testing, this one has earned its spot in the household twice over. Grab yours on Amazon here

Two 12 oz YETI Rambler Colster in a cooler of ice.
Cans out of the cooler and into the YETI for an all day cold drink!

As an Amazon Associate I earn from qualifying purchases. This means if you click a link and make a purchase, I may earn a small commission at no extra cost to you. All opinions are entirely my own.

Morgan Donovan

Morgan Donovan

Nurse of nearly two decades, seasoned traveler, and the honest voice behind every review on this site. I buy it, I use it, and I tell you exactly what I think.

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