YETI Rambler 12 oz. Colster Can Insulator — Navy, Double-Wall Vacuum Insulation & Durable Stainless

The YETI Rambler 12 oz. Colster in Navy is a rugged, double-wall vacuum can insulator that keeps standard 12 oz cans cold and protected without adding a can insert.

Engineered to perform outdoors and at home, this Colster pairs heavy-gauge stainless construction with YETI’s signature finish to resist chips and scratches. It secures a standard slim or classic 12 oz can with a simple quarter-turn gasket, creating a tight seal that slows warming and prevents condensation. The result is a dependable way to hold your drink colder, longer while keeping hands dry and glassware uncracked.

How does the Colster keep drinks cold on long outings?

The Colster uses a double-wall vacuum barrier to limit heat transfer from your hand or the air into the can. That insulated cavity traps cold inside so beverages hold their chill for hours compared with an uninsulated can.

• Double-wall vacuum insulation reduces temperature exchange.
• Thick-gauge stainless steel improves thermal performance and durability.
• Tight Load-and-Lock gasket minimizes air gaps and stops condensation.

Will the Rambler 12 oz Colster fit my can type?

This Colster is sized for standard 12 oz cans — both classic and slim formats — and secures them with a quarter-turn locking gasket. It does not include a separate can insert; simply place your full can inside and twist to seal.

• Designed for typical 12 oz aluminum cans (standard and slim).
• No extra can insert included — ready to use with your cans.
• Load-and-Lock gasket accommodates slight size variations while holding cans firmly.

What makes the construction travel-ready and durable?

YETI built this Colster from thick-gauge stainless steel and finished it with a tough Duracoat color that resists fading, chipping, and scratching. The robust materials stand up to backpacks, coolers, and campsite use so the insulator keeps looking and performing well season after season.

• Thick-gauge stainless steel for impact resistance and long life.
• Duracoat exterior resists wear and retains color outdoors.
• Simple, rugged design with minimal parts to fail in the field.

How easy is it to clean and transport?

The Colster’s smooth interior and removable gasket make it straightforward to rinse and let dry, while its compact form fits most cup holders and cooler pockets. Because it’s designed without electronics or fragile parts, maintenance is minimal.

• Wipeable interior and exterior; remove gasket to clean thoroughly.
• Compact shape fits common cup holders and cooler spaces.
• All-steel build resists stains and retains finish with normal care.

Who is this for? The YETI Rambler 12 oz. Colster in Navy is ideal for campers, tailgaters, boaters, and everyday users who want a reliable, low-maintenance way to keep standard 12 oz cans cold while protecting the can and their hands. If you prefer a durable, travel-ready insulator with a strong seal and a chip-resistant finish—without a separate can insert—this Colster delivers consistent performance.