Multiclimate Undershirt
Accessory2★Equipment covering both ends of the temperature range, with a small lift to Heat and Cold Resistance.
Wearing it also carries the effect Heat Resistance Lv. 3 / Cold Resistance Lv. 3, which matters more than the raw numbers in the biomes that punish you for the wrong outfit.
Nothing is crafted from it — it is an end product, so anything you make is meant to be used rather than banked as a component.
Details
It does not stack, so every spare copy costs an inventory slot. At 167,040 gold it is worth real money to a merchant.
Multiclimate Undershirt Crafting Recipe
High Quality Cloth
Flame Organ×20
Ice Organ×20
Polymer×20
High Quality Pal Oil×40
Sulfur×20Crafting it takes 100 materials across 4 types.
Where to Find Multiclimate Undershirt
The recipe is not on the Technology tree — it is locked behind a schematic you have to find first. The best single source is treasure chests in the Feybreak at 3.4% per container, and the table below lists every tier and where each one drops.
The Rare copy is not a technology you unlock — it rides on the Multiclimate Undershirt Schematic (Multiclimate Undershirt Schematic), a grade 5 chest item confined to the Feybreak content. Treasure chests in Feybreak Cavern hand it over at 3.45%, the crates on the oil rigs at 1.18%, ordinary Feybreak chests at 0.19%. Call it 29 cavern chests, 85 rig crates or 526 field chests on average. Farm the cavern: the field chests roll the same paper at an eighteenth of the rate, for the same walking.
Using Multiclimate Undershirt Well
The schematic wants a High-Quality Workbench, the same bench the ordinary version already uses, so owning it costs no new base build. Budget the crafting time though: this shirt carries 100,000 work against 30,000 for Heat Resistant Undershirt, so put your best Handiwork pals on it or it will sit on the bench through a full day cycle. The plus tiers above the Rare have no recipe anywhere in the crafting tables — they are loot only, so the schematic version is the strongest one you can decide to build.
The point of this shirt is the slot, not the numbers. It folds the heat line of Heat Resistant Undershirt and the cold line of Thermal Undershirt into one accessory, so a run that crosses the volcano and the snowfield needs no swap and no second 2-weight shirt riding in your bag. That is what the 167,040 price tag is buying — the single-climate shirts sit at 16,540 and 21,960. Both organs are the easy half of the bill; the gate in practice is 20 Polymer, which bills out to 40 High Quality Pal Oil and 20 Sulfur on top of everything else, so line up an oil route before you go chasing the schematic.
What Multiclimate Undershirt Does
Multiclimate Undershirt grants Heat Resistance Lv. 3 / Cold Resistance Lv. 3: Temperature Resist Cold +3, Temperature Resist Heat +3.
Schematics That Unlock Multiclimate Undershirt
Multiclimate Undershirt is not learned from the Technology tree — you need a schematic for it. One schematic grants the recipe, and they are world loot — chests, boss Pals and the late-game pools — rather than anything you research. Higher-rarity copies of the same schematic raise the quality of what you end up crafting.
Fastest route. The top-tier Multiclimate Undershirt schematic is worth hunting directly — treasure chests in the Feybreak is its best source, at roughly 29 containers a copy. Schematics fuse five-to-one, so a lower tier with better odds can beat the top tier outright. Counts are containers of that source, not time.
| Schematic | Rarity | Where it comes from |
|---|---|---|
 Multiclimate Undershirt Schematic | 2★ | Feybreak treasure chests, Crates on the oil rigs, Feybreak chests — best 3.4% (grade 5) |
Alternatives and Upgrades
Other accessorys at a similar tier, for when you want to weigh this against the rest of its class:
