HEATTECH Product Information
This guide explains:
• Warmth levels and how to choose
• How to wear HEATTECH effectively
• Product lifespan and performance over time
HEATTECH Warmth Levels
How do I choose and wear HEATTECH for my trip?
HEATTECH Lifespan
Why HEATTECH performance may change over time
How can I maintain HEATTECH performance?
Frequently Asked Questions
1. HEATTECH (Normal)
• Lightweight and thin
• Suitable for mild cold weather
• Recommended: 5°C to 20°C
2. HEATTECH Extra Warm
• Around 1.5 times warmer than regular HEATTECH
• Suitable for cold weather
• Recommended: -5°C to 15°C
3. HEATTECH Cashmere Blend Extra Warm
• Similar warmth to Extra Warm with a softer feel
• Recommended: -5°C to 15°C
4. HEATTECH Ultra Warm
• Around 2.25 times warmer than regular HEATTECH
• Suitable for very cold climates
• Recommended: -20°C to 10°C
-
Choose based on your destination and temperature:
• Cool weather (e.g. Japan autumn, Taiwan winter)
→ HEATTECH (Normal) with light outerwear
• Cold weather (e.g. Japan or Korea winter)
→ HEATTECH Extra Warm with a sweater and coat
• Very cold climates (e.g. Europe winter, below 0°C)
→ HEATTECH Ultra Warm with multiple layers
• If you prefer a softer fabric feel
→ HEATTECH Cashmere Blend Extra Warm -
How to wear HEATTECH (layering tips):
For best warmth, wear HEATTECH as a base layer:
1. Base layer: HEATTECH (fit close to the body)
2. Mid layer: Knit or sweatshirt (helps retain heat)
3. Outer layer: Coat or jacket (blocks cold air)
👉 Tip: HEATTECH works best when it fits closely to the body rather than loosely.
⚠️Note:
These recommendations are a general guide. The level of warmth required may vary depending on individual sensitivity to cold and activity level.
As a general guideline, HEATTECH items may be considered for replacement after about three seasons. In this context, three seasons refer to three winter seasons.
This guidance is not a strict requirement. Actual product lifespan may vary depending on:
2. Washing and drying method
3. Storage conditions
4. Individual comfort expectation
With repeated wear and washing over multiple seasons, the functional fibers in HEATTECH may gradually experience reduced effectiveness. This may impact:
• Heat retention performance
• Moisture absorption and heat generation
• Overall comfort and fit
HEATTECH uses functional fibers, including polyurethane yarn, to provide stretchability and close body fit. Over time:
1. The polyurethane yarn may deteriorate
2. Fabric stretchability may decrease
3. The material may no longer adhere closely to the body.
As a result, heat retention performance may gradually decline, even if the product still looks intact.
⚠️ Important:
• Actual performance changes may vary depending on handling, washing, and storage conditions.
• Follow washing instructions
• Avoid excessive heat drying
• Store properly when not in use
• Replace when it no longer feels warm or comfortable
-
1. Does HEATTECH have an expiry date?
No. HEATTECH does not have a fixed expiry date. The three-season guideline is a general recommendation, not a mandatory limit.
-
2. When should I consider replacing my HEATTECH?
If the item no longer feels as warm or comfortable as before, especially after several winter seasons of use, replacement may be considered.
-
3. Why does HEATTECH feel less warm over time even if it looks fine?
With repeated wear and washing, functional fibers such as polyurethane yarn may lose elasticity. When the fabric does not stretch and fit closely to the body, heat retention performance may decrease.
Suggestion Box
Feedback Submitted
Thank you for your feedback.
We value your opinion and we aim to make our customers happy.
Rest assured, we will use this information to improve our products and services.
Contact UNIQLO Malaysia
CHAT SUPPORT
Monday - Sunday: 9am - 6pm
(Including Public Holidays)
Monday - Sunday: 9am - 6pm
(Including Public Holidays)
Suggestion Box
• We do not respond to the suggestions posted in this Suggestion Box but we can help you with your concern through our Customer Center Hotline, Chat Support, or Webform.
Other Service Available
App Benefits
Download the app now to get a RM15* Welcome Coupon. Enjoy the great benefits we offer whether you are shopping in-store or online.
Bulk Purchase
UNIQLO LifeWear as your new uniform. This is a special online service for customers who wish to order LifeWear in bulk for uniforms, events, gifts and more!
First Time Shopping in UNIQLO?
Get started with RM15* off coupon when you download the UNIQLO app. Shop seamlessly online or in-store for latest products. Take advantages of the services we offer such as Extra Sizes, Product Search, Click&Collect or Alteration for bottoms. Find out more. *Valid for first time download user only. T&C apply.
Online Alteration Service
You can now alter your favourite pants online, and get them delivered to your doorsteps. No muss, no fuss.