Senna1:
our interpretation of an icon

On the German Army Trainer, and the making of a workday shoe

5 min

Black-and-white photograph of a pattern-maker's table in a footwear studio: a wooden shoe last, cut paper pattern pieces, a steel ruler, a pencil, a tape measure and a leather hide in soft window light.
Before the shoe: a last, the paper patterns and the hide.

In short

Senna1 starts from the German Army Trainer, the Bundeswehr shoe of around 1980 that became one of fashion's most borrowed silhouettes. We kept its proportion and its refusal to decorate, and changed what an Indian workday demands: a cleaner almond toe box, dimensions built on the Bha sizing system developed by CLRI, a full-grain leather in place of the original's thicker cow leather, and an entirely new footbed.

The shoe's story first, then each change in turn, and what we chose to leave alone.

A shoe you've worn without knowing its name

Most people have worn a version of this sneaker. Almost none of them could tell you its name.

It was made for the West German army around 1980 - issued to soldiers, never sold in shops. A plain trainer: white leather upper, a grey suede patch over the toe, a reinforcing panel on the side, a gum sole with an odd circle-and-grid tread. No real logo. Nobody was trying to make it beautiful. They were trying to make it survive a soldier's week and cost the army very little, which is usually when the honest things get made.

Line drawing of the original German Army Trainer: above, the shoe in side profile with a suede toe wrap, a single leather strip across the side, a raised heel protector and a gum sole; below, the same shoe from above, showing the suede forming a T with a narrow strip running back to the seven-hole lacing.12345
Fig. 1 The original German Army Trainer, from the side and from above.
  1. 1 Suede toe wrap, where training scuffed the shoe raw.
  2. 2 Leather side reinforcement.
  3. 3 Raised heel protector.
  4. 4 Gum-rubber cupsole.
  5. 5 From above, the suede forms a T, with a narrow strip running back to the laces.

Drawing based on photographs of original issue pairs.

For years that's all it was. Standard kit. Then the Cold War ended, Europe's surplus stores filled up with discharged army stock, and the sort of designers who rummage through those places started pulling it out. Martin Margiela was one of them. He put original pairs on his 1998 runway, then made his own and called it, deadpan, the "Replica." He didn't redesign it. He just put it somewhere new - and that turned out to be enough. A shoe nobody had looked at for nearly two decades became one of the most borrowed-from silhouettes in fashion, remade by house after house at every price, and somehow still current enough that the sneaker internet crowned a "summer of the GAT" in 2024. It sits now in that small group of shapes the whole trade knows by heart. It got there by being right and keeping quiet about it.

Why we started here

An Indian professional's workday is a bit of a skirmish. The commute alone can finish you. Then there's the broken pavement, the heat, meetings that run like war rooms, and a day with no real intention of ending at five.

For that, the GAT made sense as a starting point. The toughened toe, the side panel, the gripping sole - none of it was there for looks, all of it earned its place. The stance sits planted but light. And it goes, without fuss, from old denim to a pressed collar - which is the one thing the workday actually asks of a shoe, and the thing most of them can't manage.

It got there by being right and keeping quiet about it.

We're not the first to borrow from it. We're glad to be in that company. But every version before ours was built for somebody else's day, somewhere else. We built ours for yours: the twelve-hour, many-roomed Indian workday that starts before the traffic and ends well after dinner. Senna1 is our reading of the GAT, changed - heavily, and deliberately - for that day.

Toebox profile revised

The original toe box is round, a little sporty. We drew it into a cleaner almond. That was about composure, mostly - the almond reads considered, and it carries into a serious room, where a rounder toe can look like you turned up to play a match.

Built to the Indian foot

Shape is one thing. Dimensions are another, and this is where most shoes here quietly let you down - they're still cut on European or UK lasts, then sized up and hoped over. Senna1 is built on the Bha sizing system, developed by CLRI from the measured feet of more than a lakh Indians. The forefoot and the girth are cut to Indian proportions, not borrowed ones. There's more on the sizing elsewhere.

Leather upgraded

The GAT was always a leather shoe - white leather upper, suede only at the toe. In its day that upper was a sturdy, working hide, usually a thicker cow leather you had to break in before it stopped arguing with your foot. We kept the leather. We changed which one.

Black-and-white image of the original German Army Trainer in side profile on a light grey ground: creased white leather upper, grey suede toe wrap, a single leather strip across the side, a raised heel and a grey gum sole.
Fig. 2 An illustration of the original German Army Trainer, as issued around 1980.

Generated from photographs of original issue pairs; not a photograph.

Ours is a full-grain leather, thinner and lighter than the original's, and soft from the first wear, without the breaking-in the old ones were famous for.

Then the surface, which is the real reason. The original uses suede at the toe for a plain, practical purpose: that's the part a soldier scuffs raw in training, and suede takes a beating without showing it. Our day isn't that brutal. So we didn't need to armour the shoe - which freed us to let the leather show. Suede blurs a surface; full-grain shows it. And we wanted it shown: the fine, close grain you only get from a hide nobody has sanded or stamped. More on the leather elsewhere.

Underfoot re-engineered

Under the foot, almost nothing of the original is left. It was built for a parade ground and a short day; yours is neither. We lined it in soft leather against the skin, and built our own footbed, shaped for cushioning and support across a long day. Even the cupsole and the tread were chosen against the same brief. That's a longer story than this page has room for.

The mark added

The biggest visible change is a quiet one. The structural leather panel on the side is gone. Where it used to run, there's now the THUUN marker - an Indian pillar.

Left unchanged

What we didn't touch is the discipline of the thing. The flat, honest proportion. The refusal to decorate. We changed what the foot and the day genuinely needed changed, and left the rest - because the whole point of the GAT is that a right design doesn't get better when you add to it. That part, we didn't argue with.

Senna1 is recognisable, if you know what it came from. That's on purpose. It just happens to be carrying a day the original never had to see.