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Cozy Winter Adventures with UNIQLO’s HEATTECH and PUFFTECH

Year-end travel season is back and so is every Malaysian’s annual struggle: how do you survive winter when your whole life has been 30°C and humid?

With Seoul, Tokyo and Hokkaido topping the holiday charts again, many travellers are relearning the art of staying warm without dressing like a walking wardrobe.

Enter the new wave of smart winter wear fabrics that look light, feel light, but work overtime in the cold. Think HEATTECH Extra Warm Cashmere Blend that turns body moisture into heat, and PUFFTECH jackets so featherlight they weigh about the same as a smartphone. Perfect for airports, snow cities and everything in between.

The Science Behind Staying Warm

Winter gear today isn’t just thick, it’s engineered.

HEATTECH, developed with advanced Japanese textile technology, quietly changed the game for travellers. The fabric absorbs moisture, converts it into heat, and traps warmth using ultra-fine micro-acrylic yarns (10x thinner than human hair!). Thin enough to slip under a blazer, warm enough for -5°C evening strolls.

How HEATTECH works:

  • Moisture Absorption: Body vapour is absorbed by specialised polymer fibres.
  • Thermal Conversion: Moisture movement creates kinetic energy, which transforms into heat.
  • Heat Retention: Micro-acrylic yarns create tiny air pockets to trap warmth.

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Then comes PUFFTECH, co-developed with Japan’s Toray Industries. Using synthetic fibres that mimic natural down, PUFFTECH creates multi-layered air pockets for maximum insulation without the bulk. It’s quick-drying, durable, and keeps you warm even in 90%+ humidity.

Each fibre is ultra-fine (one-fifth a human hair!) with a spring-like structure for volume, softness and long-lasting warmth.

A PUFFTECH jacket fits into your carry-on, survives the rain, and transitions smoothly from KLIA humidity to icy winds in Sapporo.

UNIQLO HEATTECH

https://www.uniqlo.com/my/en/women/heattech

UNIQLO PUFFTECH

https://www.uniqlo.com/my/en/women/outerwear/ultra-light-down?path=%2C%2C34680

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