Weak Armor

When a Pokémon with Weak Armor is hit by a physical move, its Defense drops one stage, but its Speed increases by one stage.

Game descriptions

Black
White
Black 2
White 2
Physical attacks lower Defense and raise Speed.
X
Y
O.Ruby
A.Sapphire
Physical attacks lower its Defense stat and raise its Speed stat.
Sun
Moon
Ultra Sun
Ultra Moon
Physical attacks to the Pokémon lower its Defense stat but sharply raise its Speed stat.
Sword
Shield
B.Diamond
S.Pearl
Physical attacks to the Pokémon lower its Defense stat but sharply raise its Speed stat.

Other languages

EnglishWeak Armor
SpanishArmadura Frágil
ItalianSottilguscio
Japaneseくだけるよろい (Kudakeru Yoroi)
GermanBruchrüstung
FrenchArmurouillée