Warmth is not a property of a fabric. It is a property of trapped air. Every warm garment you own works by holding still air near your skin, because air is a poor conductor of heat and your body keeps reheating it. Fabric is just the scaffolding that holds the air in place.
Once you see it that way, the choice between fleece, polyester and knit stops being a matter of taste.
Fleece: the most warmth per rupee
Polar fleece is polyester that has been brushed on one or both sides to raise a pile. That pile is the point — it is a forest of fibres standing on end, and the gaps between them hold air.
This makes fleece the most efficient warm fabric available at Pakistani price points. It is light, it dries fast, and unlike wool it does not absorb moisture, so it stays warm when damp.
Its weakness is wind. A breeze moves straight through the pile and carries the trapped air away with it, which is why a fleece hoodie that felt warm indoors feels useless on a motorbike.
Best for
Indoor warmth, early mornings, layering under a jacket, and anything a child will wear and spill something on.
Woven polyester: the windbreaker
Tightly woven polyester — the shell of most tracksuits and zipper jackets — holds almost no air by itself. Alone it is not warm.
What it does is block wind, and that is worth more than it sounds. Stopping air movement lets whatever you wear underneath do its job. A thin fleece under a polyester shell outperforms a thick fleece on its own in any kind of breeze.
Most tracksuits sold here are woven polyester outside with a brushed fleece lining inside, which is the combination doing both jobs at once.
Best for
Outdoors, commuting, anything involving a bike. Look for a lined tracksuit rather than an unlined one.
Knit: breathable, not windproof
Knit fabric is made of interlocking loops rather than crossed threads, which is why it stretches. The loop structure holds a moderate amount of air and lets water vapour escape easily.
That breathability matters more than people expect. A fabric that traps sweat against your skin will make you colder than one that is slightly thinner but lets moisture out, because evaporating water pulls heat away fast.
Best for
Moving around, mild winter days, and anyone who overheats in fleece.
Reading a product page
A few terms recur and are worth knowing:
- GSM — grams per square metre. A 180 GSM fleece is light; 280–320 GSM is proper winter weight. Higher is warmer and heavier.
- Quick-dry / moisture-wicking — a knit engineered to pull sweat outward so it evaporates. Good for activity, less warm standing still.
- Brushed / fur-lined — the inside has been raised into a pile. This is where almost all the warmth comes from.
- Two-piece / 2 Pcs — top and trousers together, the standard tracksuit listing here.
What to actually buy for a Pakistani winter
Lahore, Islamabad and the north get genuinely cold for roughly ten weeks. Karachi does not. Buying for the wrong one of those is the most common mistake.
For the north, a 280 GSM-plus fleece hoodie plus a lined zipper jacket covers almost everything. For Karachi and the south, a single mid-weight fleece or a knit sweatshirt is usually the whole winter wardrobe.
Layering beats bulk in both cases. Two thin layers trap more air than one thick one, and you can take one off when the afternoon warms up — which in most of Pakistan, it will.
Common questions
Is fleece warmer than wool?
Per gram, roughly comparable. Fleece wins on price, drying speed and not itching. Wool wins on wind resistance and smell. For most people here, fleece is the practical choice.
Why does my tracksuit feel cold despite being thick?
It is probably unlined woven polyester. Thickness without a brushed inner surface holds very little air. Check whether the inside is smooth or furry — furry is warm.
