There are two things that touch your dog's body every day: his clothing (if he wears any) and his harness. Most owners choose both for the same reasons — looks, price, availability. But the material that sits against his skin all day deserves more thought than most people give it.
Against the skin: cotton for clothing
If your dog wears anything against his body — a t-shirt, a base layer, a shirt for an occasion — the only honest recommendation is cotton.
Cotton breathes. It absorbs moisture instead of trapping it. It sits flat against skin without creating friction. Synthetic fibres — polyester, acrylic, nylon — do the opposite. They trap heat and moisture between the fabric and the skin, creating the warm, humid conditions where hotspots, fungal irritation, and contact dermatitis begin.
Acrylic is particularly problematic. It is the most common fibre in pet knitwear, and it produces static, attracts dust, and does not absorb moisture. On a dog with sensitive skin, an acrylic garment can cause more irritation in a day than a week without one. Something to think about the next time a brand describes their dog sweater as cosy.
Not all cotton is equal. Short-staple cotton pills quickly and feels coarse after a few washes. Long-staple cotton retains its softness and breathability over time. When choosing a cotton piece for your dog, feel the fabric. If it feels stiff or rough when new, it will only get worse.
Our Le Coton is a simple cotton t-shirt, handmade in Paris. Cotton, cut for a dog, made well. For cool evenings, air-conditioned restaurants, or under a harness to protect the contact points. Nothing more than what it sounds like.
Against the body: hemp for harnesses and leashes
Here is the part nobody talks about.
Your dog's harness sits against his chest, wraps under his armpits, and presses against his belly — the most sensitive areas of his body. Most harnesses are made from nylon webbing with polyester padding. Synthetic material, pressed against sensitive skin, for hours every day. In summer, above 32 degrees, that nylon heats up, traps sweat, and rubs.
The result is predictable. Chafing under the armpits. Hair loss at the strap lines. Hotspots on the chest. Owners blame the fit of the harness — and sometimes the fit is wrong — but often the problem is the material itself. Nylon was designed for backpacks, not for a dog's chest.
Leather is the traditional luxury alternative. Beautiful, yes. But above 32 degrees — the normal summer across most of Europe — leather heats up against the body, dries out, stiffens, and cracks with repeated heat exposure. If your dog swims, if you go to the beach or the lake, leather and salt water are a terrible combination. One summer of real use and the harness is finished.
What works against a dog's body in summer is hemp webbing. Hemp is the strongest natural plant fibre — stronger than cotton for structural use, as durable as nylon, and naturally resistant to mould, mildew, and UV. But the reason it matters for harnesses is simpler: it does not heat up against skin. It dries in minutes after swimming. It does not trap moisture between the strap and the chest. It does not cause friction burns at the contact points. And it softens with use — like a good pair of jeans — instead of hardening like leather in the heat.
If you are choosing a harness or leash for summer — or for any climate above 30 degrees — choose 100% natural hemp webbing. Not a hemp-cotton blend, not hemp-look nylon. Pure hemp. Your dog's chest and armpits will tell you the difference within a week.
The honest setup
Cotton against his skin — for the days when he needs a layer.
Hemp against his body — for the harness and leash he wears every walk, every swim, every day.
Two natural materials. Each where it belongs. Cotton where the fabric touches fur and skin. Hemp where the straps press and hold. No synthetics against skin. No leather in the heat.
Your dog cannot tell you his harness is too hot. But his skin will.
