Why Rainwear Is the Backbone of a Slow Wardrobe

Few things are more British than a conversation about rain, and few purchases repay thought more handsomely than a raincoat. In a slow wardrobe, this is the piece that works hardest: it goes to the office, the allotment, the school gate and the coast path. Bought badly, it ends up as a clammy, flapping nuisance that lives in the boot of the car. Bought well, it lasts a decade or more and quietly improves the way everything underneath it looks. The secret is not the label but the construction, and that is something you can assess with your own hands in a shop.

Start With the Outer Fabric

Everything else depends on the cloth. A good rain shell should feel dense and slightly stiff when you hold it up — never papery. Hold it to the light: if you can see a loose, open weave, water will find it. Look for tightly woven cotton treated with wax or a dry finish, which softens with wear and can be re-proofed at home, or a modern performance fabric with a breathable membrane bonded to it. Both have their place. Waxed cotton suits the country beautifully and gains character with every season; a technical cloth is lighter and better for a long commute.

Be wary of anything that rustles like a crisp packet. Thin nylon feels cheap, tears on brambles and hawthorn, and rarely survives more than two or three winters. If the fabric sounds angry when you move, put it back on the rail.

Taped Seams and the Details That Keep Water Out

A waterproof fabric is only as good as its seams. Water rarely creeps through the middle of a panel — it seeps in along the stitching, where hundreds of needle holes have punctured the cloth. That is why taped seams matter so much. Run your fingers along the inside of the shoulder seams and under the arms; you should feel a smooth, slightly rubbery strip bonded over the stitching. If the seams are bare, the coat will leak at precisely the points most exposed to weather.

While you are looking, check these:

• A storm flap over the main zip, so rain cannot drive straight through the teeth.
• Adjustable cuffs — a tab and popper, or a drawcord — to seal the gap at your wrists.
• Pockets with flaps or zips, set slightly forward so water runs off rather than in.
• A high collar that stands up on its own and covers the back of your neck.

The Hood Is Where Cheap Coats Fall Down

A flat, fixed hood with no adjustment sits like a tea cosy, slides back in the wind and leaves the rain running down your face. What you want is a hood that adjusts on at least two points: a drawcord at the front to gather the opening around your face, and often a second at the back to pull in the crown and stop it flopping forward. A stiffened peak, or a wire in the brim, keeps rain off your glasses and lets you see where you are going. Try it on with your hair up, or over a hat, if that is how you will wear it. The hood should turn with your head rather than lag behind it.

Choosing Your Length: City and Country

Length is where town and country needs genuinely diverge, and it is worth thinking about your real days rather than an imagined one.

For town, a coat falling to mid-thigh or just above the knee is the sweet spot. It covers a suit or a dress, looks tidy over a shoulder bag, and does not trail in puddles on the platform. Anything longer catches on escalators and soaks up splashes from passing buses.

For the country, go longer — below the knee, sometimes to the calf. You will be sitting on wet gates, kneeling to tie a boot and walking through long grass, and a longer hem keeps the weather off your legs. Look for a back vent or a two-way zip so you can stride out and sit down without the fabric pulling tight.

Whichever you choose, test the movement before you commit. Reach both arms forward as though pushing a barrow, raise them overhead, then crouch. A raincoat that restricts you will be left on the peg on exactly the days you need it most.

Colour, Care and Keeping It for Years

Finally, think about the long haul, because this is what separates slow fashion from fast. Choose a colour you will still like in ten years — navy, olive, stone, a deep forest green — and a cut simple enough to sit over everything from a thin jumper to a tweed jacket.

Care is straightforward but worth doing properly. Shake the coat out and hang it on a wide hanger to dry at room temperature, rather than on a radiator, which can damage the proofing. Clean it according to the maker's instructions; with waxed cotton that means re-waxing the shoulders and cuffs once a year or so — a pleasant job for a quiet afternoon. Repair small tears and replace lost buttons before they become reasons to buy something new.

Buy well once, look after it, and a good raincoat will see you through a great many British summers.