Why Fabric Weight Matters More Than Branding

Two shirts can look identical on a rail and behave completely differently after ten washes. The difference usually shows up in three numbers: fabric weight, elastane content and stitch density.

Fabric weight is measured in grams per square metre. Lightweight running tops sit between 110 and 140 GSM. A premium heavyweight hoodie starts at around 350 GSM. Anything marketed as premium below 280 GSM in fleece is optimistic.

Stretch recovery matters more than raw stretch. A garment with 12 percent elastane that recovers its shape will outlast one with 20 percent that bags out at the knee.

Ask about stitch density and seam type before you ask about the logo. Flatlock seams at the shoulder and gusseted underarms are what stop chafe on long efforts.