What GSM Should a Long Sleeve T-Shirt, Crewneck Sweatshirt, and Jogger Be for Fall vs Winter?

One of the most common questions in basic apparel development sounds technical, but it is actually very practical: what GSM should we use? This matters because buyers often say they want a garment to feel “not too thin” or “premium but not too heavy.” That sounds clear in conversation, but it is not clear enough […]