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Key Points

Key Takeaways

  • 1

    In 2026, heating and cooling-compatible wear using Peltier elements becomes common., Workman offers the best value for money, with improved design that works as city wear., Uniqlo has perfected the power of materials (moisture-wicking heat generation)

  • 2

    solidifying its position for innerwear., Battery standardization has progressed

  • 3

    making it easy to reuse mobile batteries.

From “Layering” to the “Heat-Generating” Era

The era of layering multiple down jackets is over. From now on, “the smart way to spend winter is to slip a single ‘heat-generating inner’ under a thin coat.

Thorough Comparison by Brand: 2026

Brand Workman (Wind Core) Uniqlo (HEATTECH) Tech Brands (G-Heat etc)
Heat Source, Heating Sheet / Peltier, Moisture-wicking Heat-generating Material, Carbon Fiber Heating
Instant Warmth, ◎ (10 sec), △ (Depends on Body Temp), ◎ (5 sec)
Battery, Dedicated/Universal USB, Not Required, Universal USB
Price Range, From 4,000 Yen, From 1,500 Yen, From 10,000 Yen
Washing, Possible (requires removal of module), Regular Wash, Hand Wash Recommended

1. Workman: The Beast of Value and Functionality

The 2026 “Heater Vest” model achieves three-point heating on the neck, back, and waist, in addition to an aluminum print on the back. Setting the price under 5,000 Yen is astonishing. Furthermore, “Peltier Vests,” which can cool in summer and heat in winter, have continued to undergo miniaturization, evolving into all-season gadgets.

2. Uniqlo: Magician of Materials

Uniqlo continues to compete with “materials” rather than electrical heating. The new Heattech socks, which appeared from the Fall/Winter 2025 collection, have significantly improved durability and deodorizing functions. The ease of “not using electricity” is, after all, the strongest for daily use.

  • Extremely Cold Outdoors : Workman Heater Vest (Strong Mode) + GORE-TEX Shell
  • Winter Commuting : Uniqlo Heattech Underwear + Heated Gloves (ON only during commuting)
  • Indoor Remote Work : Heated Room Shoes + Thin Fleece

Summary

By wearing technology, your range of activity in winter will expand dramatically. If you’re sensitive to the cold, please try the latest “wearable gadgets.”