Warehouse Expansion in Arena Breakout. The guide includes instructions on how to increase warehouse space in Arena Breakout. Use this as your reference to learn more about it.
Table of Contents
How to Expand Warehouse for Free
Use the Armor Case from Login Bonus

By using the "Medium Armor Case" obtained from the New Recruit Check-in, your warehouse will be expanded by 7x10 slots. Note that only armor-type items can be stored in it.
Obtain Cases from Evita

You can exchange specified items with the trader Evita for various cases. Items for exchange are often expensive if bought from the market, so aim to obtain them in raids or earn enough Koen to purchase them.
Warehouse Expansion Method Using Cowhide Backpacks
What to Prepare
- - Cowhide Backpack ×2
- - RUSH Tactical Backpack ×1
- - FA Commander Chest Rig or B6 Tactical Chest Rig ×2
Expansion Method
Step | Description |
![]() | Place a Cowhide Backpack inside another Cowhide Backpack. |
![]() | Place a RUSH Tactical Backpack inside the inner Cowhide Backpack. |
![]() | Place two FA Commander Chest Rigs or B6 Tactical Chest Rigs inside the RUSH Tactical Backpack. |
![]() | Place supplies inside the rigs or in the space of the Cowhide Backpack. (Up to 30 additional spaces can be created) |
The FA Commander Chest Rig can hold 2x2 items, so it's recommended to use this when you want to store items like helmets.
The Most Efficient is the "AL Assault Ballistic Rig"
Link | Storage Capacity |
![]() | 18 |
It can be stored in a space-saving 3x3 slot, allowing for a 9-slot warehouse expansion. However, it is a luxury item, costing about 200,000 Koen when new. If purchasing solely for storage, it's recommended to buy one in "Worn" condition.
Remove the Gun's Magazine and Pistol Grip
Step | Description |
![]() | Select the gun and tap the magnifying glass button at the bottom. |
![]() | Remove the magazine and pistol grip attachments. |
![]() | The gun's space will be halved, creating more room in the warehouse. |
Some Stocks Can Be Folded

Select the weapon, and if the option "Fold Stock" appears, tap it to fold the stock. This will make the weapon smaller and free up warehouse space.
How to Use the Vault
Vault Available for 300,000 Koen per Month

Starting from Season 8, it became possible to expand the warehouse by paying Koen. Unlike the regular warehouse, items in the vault must be withdrawn before they can be taken into raids.
Can Store Items Worth 200 Slots

Items deposited in the vault are counted towards its capacity based on the number of slots they require for storage. When depositing weapons, removing magazines and attachments can sometimes save storage space.
List of Items That Cannot Be Deposited in the Vault
Items that cannot be placed in the vault | |
Koen | Backpacks containing items |
Rigs containing items | Headgear with masks |
Magazines containing ammunition |
Stored Items Will Disappear if the Subscription Expires

When the subscription expires, be sure to withdraw items deposited in the vault. During expiration, Koen will be deducted from the deposit over time, and if the deposit reaches zero and 7 days pass, the items will disappear.
Expand Warehouse by Purchasing Secure Containers
Composite Secure Container Privilege

Additional Warehouse Space |
140 |
From Season 8, the Prime subscription was discontinued, and its contents were integrated with the Secure Container. The number of warehouse expansions has increased, and key storage capacity and market listing slots are also expanded, making it a very cost-effective option.
Ballistic Secure Container Privilege

Additional Warehouse Space |
70 |
The Ballistic Secure Container offers less additional warehouse space compared to the Composite Secure Container, but its monthly cost is lower. Be aware that if activated simultaneously with the Composite Secure Container subscription, the Ballistic Secure Container will be disabled.
Warehouse Expansion Procedure in Cases
Activate Cases

Case-type items cannot be used as warehouse space unless they are activated after obtaining them. Activating them makes warehouse organization much easier, so don't forget to do so.
Increase up to 4 Slots with Purchase

Number of Slot Increases | Points Required for Expansion |
1st Slot | 10 Points |
2nd Slot | 60 Points |
3rd Slot | 200 Points |
4th Slot | 400 Points |
If you're struggling with warehouse capacity, increasing case slots is one option. This is a one-time purchase that permanently increases the number of expansion box slots.