The Spike Holster determines the number of each type of Spike Thrower Spikes that can be carried in the inventory.
Aloy begins Horizon Forbidden West with a maximum carry capacity of 10 Impact Spikes, and 6 each of Drill Spikes, Explosive Spikes, and Elemental Spikes. The number increases as the pouch is upgraded through crafting.
Crafting[]
| Upgrade | Capacity | Crafting Cost |
|---|---|---|
| 1 | 14 Impact Spikes
8 Drill Spikes 8 Explosive Spikes 8 Elemental Spikes |
 251 Fox Hide |
| 2 | 18 Impact Spikes
12 Drill Spikes 12 Explosive Spikes 12 Elemental Spikes |
50 1 Peccary Hide |
| 3 | 22 Impact Spikes
15 Drill Spikes 15 Explosive Spikes 15 Elemental Spikes |
100
|
| 4 | 27 Impact Spikes
18 Drill Spikes 18 Explosive Spikes 18 Elemental Spikes |
200
|