Bunker Cool Box, 18L

The most packable cool box in the BUNKER range. Every bit as tough.

The Bunker 18L Cool Box is the most compact and portable entry in the BUNKER limited edition storage range — a grab-and-go cool box that refuses to cut corners on performance. Rotomolded from a single seamless shell, insulated for up to five days of ice retention, and tipping the scales at just 7.6kg, this is the cool box that goes everywhere the larger models can't — without leaving any of the quality behind.

Five Days. Eighteen Litres. No Excuses.

Despite its compact dimensions, the Bunker 18L delivers the same impressive insulation performance as its bigger siblings. Heavily insulated walls maintain ice retention for up to five full days — a benchmark that puts it firmly in premium cool box territory regardless of size. Whether you're packing drinks for a day's fishing, keeping provisions fresh on a sailing trip, or supplementing a larger cool box with a dedicated drinks cooler at camp, the Bunker 18L holds its temperature long after lesser cool boxes have given up. The no-sweat exterior keeps the outside completely dry, protecting whatever surface it sits on.

Rotomolded. Ready for Anything.

The same rotomolded construction that defines the entire BUNKER range is here in full — a seamless, one-piece shell that is tougher, more impact resistant, and better insulating than anything a standard fabrication process can produce. At this size, that durability matters even more: the 18L will be thrown in the back of vehicles, stowed on boat decks, squeezed into tight spaces, and generally treated the way small gear tends to be treated in the field. The Bunker is built to take it. UV resistance ensures the exterior remains in excellent condition through repeated exposure to sun and the elements.

Lockdown Lid. Leakproof by Design.

Two heavy-duty interlocking latches hold the lid under firm, airtight pressure — keeping the cold in, the water out, and your contents secure during transport. The stainless steel latch hardware doubles as a bottle opener, a smart dual-purpose detail that earns its place at any outdoor gathering. A built-in pressure release valve makes the lid straightforward to open after extended sealed use, and a recessed drainage plug at the base makes clearing meltwater clean and simple. Non-toxic throughout — completely safe for food and drink.

The Handle That Makes the Difference

At this size, how a cool box carries matters as much as how it performs. The Bunker 18L features a strong aluminium handle with a comfortable moulded grip — a step up from the plastic handles found on comparable cool boxes — making it easy and comfortable to carry single-handed over longer distances. At 7.6kg empty, it's light enough to be genuinely portable in a way the larger BUNKER models simply aren't. Non-slip feet keep it stable wherever it's placed, and integrated tie-down anchor points allow it to be secured to a boat, trailer, or vehicle when conditions demand it.

The Perfect Companion Cool Box

The 18L sits naturally alongside the 42L or 66L for those who run a two-cooler system — using the larger box for bulk storage and the 18L as a dedicated drinks or snack cooler that gets opened frequently without compromising the main box's temperature. It's equally effective as a standalone cool box for solo day trips, fishing sessions, picnics, or any situation where you need reliable cold retention in a pack-friendly size.

Limited Edition — Don't Miss Out

The Bunker 18L is part of a limited edition release. Stock is finite and won't be replenished once it's sold through. If you want the most portable cool box in the BUNKER range, now is the time to get it.

Key Features:

• 18.9L capacity — ultra-portable and ideal for solo use or as a companion cooler
• Rotomolded construction for maximum impact resistance and durability
• Up to 5 days ice retention with heavily insulated walls
• Leakproof, non-toxic and UV-resistant
• No-sweat exterior keeps the outside completely dry
• Two heavy-duty interlocking stainless steel latches — double as bottle opener
• Built-in pressure release valve for easy lid opening
• Recessed drainage plug for clean meltwater drainage
• Strong aluminium handle with comfortable grip
• Non-slip feet for stable placement on any surface
• Tie-down anchor points for secure attachment to boats, trailers or vehicles
• Limited edition BUNKER range

Specification: Volume: 18.9L | Dimensions: W 545 x D 340 x H 580mm (inc. handle) / 370mm (exc. handle) | Weight: 7.6kg

Product Code: BCOO1-18