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革の種類でどう変わるか：ホースハイド・カウハイド・ゴートスキン・シープスキン・ディアスキン
How the hide changes the jacket: horse, cow, goat, sheep and deer
The same pattern in a different hide is a different jacket. Horsehide, cowhide and calf, goatskin, sheepskin, deerskin - the five we actually use, compared by how they feel to... Read more...
A-2の数字の読み方：18775・23380・16159は何が違うのか
Reading the numbers on an A-2: 18775, 23380 and 16159
The numbers that follow an A-2 around - 18775, 23380, 16159 - are contract numbers from the US Army's air arm. Each contract came with its own collar and pockets,... Read more...
B-15B MOD フライトジャケット。セージグリーンのナイロンに、袖のジップポケットとU.S. AIR FORCEの袖章
Flight jacket designations explained: B-15, MA-1, L-2B, CWU-45/P, N-3B
B-15, MA-1, L-2B, CWU-45/P, N-3B. The names look interchangeable, but each one is fixed by when it was adopted and how cold it was built for. Here is the timeline,... Read more...
スタンドカラーの黒いカフェレーサー型レザージャケット。前身頃と背面
What is a cafe racer jacket? J-100, 641 and the crew neck
A low collar, a straight zip, a short body. The cafe racer is a leather jacket with everything unnecessary stripped off, because you ride it leaning forward. How to tell... Read more...
茶芯とは：ブラックの革の下からブラウンが出てくる、あの現象のこと
What is tea-core leather? The brown that comes through the black
Tea-core (chashin) is the brown centre under a black finish. As the surface wears at the elbows and cuffs, the brown underneath comes through. Here is why it happens, how... Read more...
Lightning 2026年10月号に REAL SIMONS（リアルシモンズ）が掲載されました
REAL SIMONS in Lightning, October 2026
Lightning's October 2026 issue, on sale 28 August, features REAL SIMONS. Here are the nine jackets that appear in it, with a note on where each one comes from. Read more...