A suit that's perfect for a Delhi winter is misery in a Mumbai monsoon. Same wool, same cut, but the wrong weight for the climate. This is the one decision that quietly decides whether you actually reach for the suit, or it stays in the wardrobe.
Here is the short version, organised by the three cities we serve.
What "cloth weight" actually means
The number on a fabric swatch — usually written as GSM (grams per square metre) — is just how much the cloth weighs for a given area. Lower number = lighter, more breathable. Higher number = heavier, warmer, more structured.
That is all it is. The same wool can be woven into a cloth that feels almost like a t-shirt, or a cloth that feels like a heavy blanket. The number tells you which.
For dress suits, the practical range is roughly 210 to 360 GSM. Below 210 and the cloth doesn't hold its shape. Above 360 and you cannot wear it most days of the year in most Indian cities.
Mumbai
Year-round, all functions, your default daily suit: 210 to 250 GSM.
The humidity does most of the work on temperature, so you want something that breathes. A 210 GSM tropical wool has an open weave that lets air through. It feels almost like cotton on a body. It also holds its shape because the fibres are doing the structural work, not the weight.
For an evening or formal occasion in the cooler months (December–February), 260 to 280 GSM is wearable. Anything heavier is uncomfortable for most of the year.
Delhi NCR
A wider seasonal range. 240 to 280 GSM for summer (April–June), and 280 to 320 GSM for the cool months (October–February).
The winter months in Delhi are dry and cold enough that a 320 GSM wool feels substantial without being heavy. For January meetings, you could comfortably go up to 340. A 250 GSM tropical wool covers spring and autumn well.
Avoid anything below 240 in December. The dry cold goes through it.
Bangalore
The most forgiving city, year-round: 220 to 260 GSM.
The climate doesn't ask much from the cloth. A medium-light tropical wool works in every season, indoors and outdoors. If you're only going to own one suit and you live in Bangalore, this is the band to pick.
For occasional Delhi or Mumbai travel, a 240 GSM is the safest single-weight choice.
A practical note
You don't need to memorise these numbers. Bring this up at your consultation and we'll match the cloth to what you'll actually wear it for. The point of writing it down is that the cloth weight matters more than most buyers realise — and a lot more than the brand name on the swatch.
Curious about what cloth library we carry? Talk to us and we'll show you the books.