[Waterproof] Sidekick 05 Expansion Bag

Pack more, and carry it all with you.

The Sidekick 05 is a 5-liter expansion bag compatible with ESI (Enduristan Standard Interface), Enduristan's proprietary expansion system.

By adding 5 liters of storage capacity, it is perfect for when you need more room for camping gear, extra layers, or food on your travels.

Expand your capacity only when you need it.

That is the beauty of the Sidekick series.

The capacity you need, exactly where you need it

Because it can be quickly attached to any ESI-compatible product, you can customize your storage to fit your travel style.

"I need a little more space for my gear."

You can add 5 liters of storage space when you need it, and simply remove it to return to a lighter setup when you don't.

Practicality, the Enduristan way

Completely waterproof, dustproof, and mudproof.
You can use it anywhere without worrying about rain or mud.

What is ESI (Enduristan Standard Interface)?

ESI is a new expansion system adopted by Enduristan.

By adding compatible expansion bags or bottle holders, you can build a cargo system tailored to your specific needs and travel style.

Place tools where they are easy to reach, or add compartments for frequently used small items.

The beauty of the system is how you can gradually customize it to your own specifications.

Because components are interchangeable across all compatible products, you aren't just buying a bag—you are building your own personal travel system.