Leather is a skin, and it responds to a Canadian winter the way skin does. It dries in heated rooms, it stiffens in the cold, it is attacked by the salt on every pavement between November and April, and it is soaked through by slush that looks harmless and is not. None of this is catastrophic. All of it is cumulative. A full-grain briefcase or a pair of good gloves can go through ten Ontario winters and come out better than it went in, or it can go through two and come out cracked at the corners and chalky along the base, and the difference between the two outcomes is almost entirely a matter of what its owner did in the first hour after coming indoors.
This article sets out what winter does to leather, and the three habits that carry a good piece through it. None takes more than a few minutes.
What the season is doing to the hide
Full-grain leather, of the kind Davidoff uses across its bags, wallets and belts, keeps the outermost layer of the hide intact. That layer is dense, tightly fibred and naturally water-resistant, which is why a well-made piece shrugs off a light shower. But it is not sealed, and it is not inert. It contains oils that keep the fibres supple, and it holds a small amount of moisture in equilibrium with the air around it.
Winter attacks both. Cold air is dry air, and the heated air inside an office or a house is drier still; a room at 21 °C in January can sit below 30 per cent relative humidity, which pulls moisture out of leather steadily and continuously. Meanwhile the oils that keep the hide flexible are drawn out by the same dryness, and, more aggressively, by salt.
Salt is the real enemy. When dissolved slush carries it into the grain and then evaporates, it leaves a mineral deposit behind. That deposit is hygroscopic, meaning it pulls moisture toward itself, so it keeps drawing water out of the surrounding fibres for as long as it remains. It also leaves the surface rough to the touch and chalky to the eye. A tidemark is not a stain sitting on the surface. It is an ongoing chemical process, and it does not stop on its own.
Habit one: salt, immediately
The single most useful thing you can do for a leather piece in winter is to deal with salt the moment you are back indoors, before it has dried and set.
Take a clean, soft cloth, dampen it, and wring it until it is barely moist. Wipe the affected area in one direction, turning the cloth as you go so that you are lifting salt off rather than spreading it around. Where a white line has already formed, a second pass with a fresh cloth is usually enough. For a stubborn, dried-in ring, a solution of one part white vinegar to two parts water, applied sparingly and followed by a plain water wipe, will dissolve the deposit; test it first on an inside seam, and use it only where a plain damp cloth has failed.
Then stop. Do not apply cream, conditioner or polish to a piece that is still damp. Let it dry at room temperature, away from any heat source, and return to it once it is fully dry.
Fresh salt lifts off in seconds. Salt left overnight has begun to work into the grain, and salt left a week has started to alter the surface. A thirty-second wipe at the door is worth more than any product you can buy.
Habit two: drying properly
Sooner or later a bag will get properly wet. A burst of freezing rain, a car door that sprays slush across the seat. What happens in the following few hours decides whether there is any lasting harm.
The rule is simple: never a radiator. Never a heat vent, a hair dryer or the fireplace. Direct heat drives water out of leather far faster than the fibres can adjust, and the result is a hide that shrinks, stiffens and, at the points of tension, cracks. Cold water does not damage good leather. Hot drying does, and the damage it does cannot be reversed.
Instead, empty the bag completely, including the small pockets, and wipe off standing water with a dry cloth. Stuff it loosely with plain paper, kitchen roll or unprinted packing paper rather than newspaper, whose ink can transfer to a lining, so that it holds its shape as it dries and the walls do not collapse inward. Stand it upright in a room at ordinary temperature and leave it; a soaked briefcase may take a day or two to dry through. Change the paper once if it becomes saturated.
When it is completely dry, and only then, it is ready for the third habit.
Habit three: feed it twice a winter
The heated indoor air of a Canadian winter takes oil out of leather as surely as the cold does, and after several months of it a hide that felt supple in October will feel faintly dry and papery at the edges. A light conditioning, twice over the season, replaces what has been lost. November, as the heating comes on, and February, as the worst of the season passes, are convenient markers, though the calendar matters less than the feel of the leather.
Choose a neutral, uncoloured cream made for smooth leather. Avoid anything that promises a high shine, anything containing silicone, and anything sold for boots and saddles, which is formulated for far thicker and rougher hides than a briefcase. Then:
- Work on a clean, fully dry piece. Conditioning over salt or dirt seals them in.
- Use far less than seems reasonable. A pea-sized amount will treat a whole panel of a bag.
- Apply with a soft cloth in small circles, working it into the grain rather than laying it on top.
- Leave it to absorb for twenty minutes or so, in a warm room but never by a heat source.
- Buff with a second, clean cloth until the surface no longer feels tacky.
The instinct to use more product is the commonest mistake, and it does genuine harm. Excess cream does not soak in; it sits in the grain, attracts dust, and dulls the surface. Over a few seasons it builds into a waxy film that flattens exactly the patina that full-grain leather is prized for. Two thin applications a winter will keep a hide supple for decades. A heavy monthly coating will leave it looking like vinyl within three.
The pieces people forget
Bags get the attention because they are large and visible. Wallets and belts suffer just as much and are looked after far less often. A wallet moves between a warm inner pocket and a cold outer one several times a day. A belt is held under constant tension at the buckle and takes the brunt of a wet coat hem. Both benefit from the same light conditioning, at the same two moments in the season, and a belt in particular should be checked at the holes, where the leather is thinnest and dries first.
Storing through the worst of it
A piece that is not going to be used for some weeks should be stored with the same care as one that is. Empty it, so that the weight of its contents does not set a permanent slump in the base. Stuff it lightly with paper. Put it in a breathable cloth bag, never in plastic, which traps whatever moisture is in the hide and encourages mildew. Keep it in a cupboard away from exterior walls, which run colder and damper, and away from any heating vent.
Avoid a basement unless it is dry and heated: cold and damp together is the one condition in which a hide deteriorates while doing nothing at all.
What a well-kept hide looks like in April
Full-grain leather that has been looked after through a winter does not look new. It looks used, in the right way. The colour has deepened slightly where hands hold it. The corners have taken on a soft sheen. The surface is even, without chalky lines or dull patches, and the hide flexes without any sound of protest. That is patina, and it is the whole point of buying full-grain in the first place. Salt, heat and neglect prevent it; a damp cloth at the door, a patient dry and a thin cream twice a season allow it. The effort involved is minutes a month. What it buys is a bag that is recognisably yours ten winters from now.