The Mound wiki
Armor40 DEFENSE · 30c

Breastplate

Forty defense for thirty coin — twice the helmet's protection for twice the price, and the single largest survivability purchase in the shop. It sells for almost nothing, so it's worn, not traded.

Last updated 2026-07-25 · Patch patch 1.01
Breastplate

The numbers

Buy price
30c
Sells for
1–3c
Defense
40
Category
Armor

Does it earn its slot?

Bought at 30c and sold back at 1–3c, this loses money on a round trip — as almost all gear does. It is meant to be used, not traded. The question is only whether its effect is worth a slot on the run you carry it.

At 40 defense this is armour rather than equipment — worn for the whole run, not swapped. A full kit of Breastplate and Helmet is 45 coin for 60 defense, which is the single largest survivability purchase in the shop and cheaper than a Flintlock Musket.

What a armor slot is for

Armour is the only gear in the game that reduces incoming damage, and it's worn for the whole expedition rather than swapped mid-run. It also has the worst resale in the shop — deliberately, because it is meant to be used until it breaks.

The opportunity cost is the honest way to judge any of it. Your pack is the binding constraint, and the same slot could come home holding a Metal Idol worth 80–120 at the Basic tier and 560–840 at Legendary, or two bottles of wine at up to 720. At 1–3c, this item is not competing on resale — it earns its place through what it doesduring the run, or it doesn't earn it at all.

For the 30c this costs, the shop will also sell you a Crossbow (30c, 40 silent damage) or a Breastplate (30c, 40 defense). Whether that trade is right depends entirely on the contract — which is the argument for reading it before you shop.

Other armor gear

ItemCostSellsStack
Helmet15c1–3c
Broken Breastplate1–3c
Broken Helmet1–3c

Keep reading

Breastplate questions

What does the Breastplate do in The Mound?

Forty defense for thirty coin — twice the helmet's protection for twice the price, and the single largest survivability purchase in the shop. It sells for almost nothing, so it's worn, not traded.

How much is the Breastplate worth?

It sells to the appraiser for 1–3c, against a shop price of 30c.

How much protection does the Breastplate give?

40 defense. Breastplate and Helmet together give 60 defense for 45 coin — the biggest single survivability upgrade available, and it works in any weather, unlike a matchlock.