T-Shirt GSM Weight Chart

GSMWeight levelHow it feelsBest for

<120Ultra-lightVery thin / often semi-sheerFashion tees, hottest weather, layering

120–150Lightweight (thin)Airy, breathable, “thin tee” feelSummer tees, soft basics, comfy everyday

150–170Light-mid (thin but better coverage)Still lightweight, less see-throughDaily tees, prints, better durability

170–220Midweight (standard tee)Classic tee thicknessEveryday tees, merch, most brands

220+HeavyweightThick, structuredStreetwear, premium feel, oversized fits