// RAW TEXTILES & WEIGHT SELECTION
Heat Reactive Fabric
The hand feel and drape of your garment start at the knitting machine. We knit our own combed cottons, loopback French terry, and technical softshells right here in Pakistan. Browse our Heat Reactive Fabric range below, with the fabric composition, weight, feel, and customization options for each one.
LEARN THE MATERIAL: WHAT IS GSM?
Grams per Square Meter (GSM) Explained
GSM measures the mass density of a 1m x 1m cut of fabric. Standard promo t-shirts use 150–180 GSM. Streetwear tees use 240–300 GSM. Premium heavy hoodies require 400–500 GSM loopback French terry.
⚡ Interactive GSM Weight Calculator
Calculated Panel Weight:
300.0 grams
160 GSM - 260 GSM
Cotton or Poly Blend with Thermochromic Pigment
Heat Reactive Fabric
A thermochromic fabric printed or dyed with pigments that shift color at a set temperature threshold, so the garment visibly changes shade in sunlight, body heat, or warm water and reverts once it cools.
Hand Feel: Smooth, standard knit or woven hand feel
Best Applications: Novelty streetwear, Limited-run drops, Kidswear, Promotional apparel
Fabric Advantages:
Visible color-change effect
Reversible reaction
Works with screen printing or dyeing
Strong talking point for a collection
Custom Dyeing & Washing Compatible