noun
leather jacket
Casual abbreviation of 革ジャンパー. Used in everyday conversation, especially among younger speakers.
あの革ジャン、かっこいいね。
That leather jacket is cool, isn't it?
寒いから革ジャンを着て出かけた。
I went out wearing a leather jacket because it was cold.
Full form; more formal or explanatory. 革ジャン is the common clipped slang.
Clipping of 革ジャンパー (leather jumper/jacket).