Simple made better.
Its warmth comes from wearable technology.
Protecting yourself from the cold means dressing in layers. UNIQLO wanted to change that common conception. The fabric itself creates warmth by using the moisture that evaporates from the body. In order to develop this revolutionary innerwear, we made over 10,000 fabric prototypes. Even now, more than 20 years after its creation, we continue to develop new functions and materials. This season, we bring the latest wearable technology to winters all over the world.
Protecting yourself from the cold means dressing in layers. UNIQLO wanted to change that common conception. The fabric itself creates warmth by using the moisture that evaporates from the body. In order to develop this revolutionary innerwear, we made over 10,000 fabric prototypes. Even now, more than 20 years after its creation, we continue to develop new functions and materials. This season, we bring the latest wearable technology to winters all over the world.
Product Stories
HEATTECH is made of four types of fibers.
The reason why HEATTECH is multifunctional, including moisture absorption and heat retention, is because it uses four types of fiber* that have different roles. Each fiber plays an important role and provides comfort when worn. The rayon fibers generate heat when it absorbs moisture, the acrylic fibers contain a lot of air and retain heat, the polyester fibers quickly absorb moisture and dry, and the polyurethane fibers have excellent stretch properties. By knitting these together, we have created a highly functional innerwear. But it's not just about functionality; there's also the questions of how we can create a beautiful surface feeling despite the use of multiple materials, and what combination of materials responds to all kinds of cold weather. Countless trials and errors are hidden behind this one piece of fabric.
*Not including babies.
Combining natural fibers with cutting-edge technology.
For innovative warmth and further evolution. Blending cashmere, a natural fiber, with HEATTECH's chemical fibers. There were immense difficulties waiting for us. Cashmere is a very delicate material. Vulnerable to heat, shock, and chemicals. There are also individual differences in thickness and length. It was a challenge like making HEATTECH from scratch. We visit the producing areas many times to find the ideal raw wool. We use AI to verify the uniformity of the woven fabric. Even the dyeing machine was specially designed to reduce the load on the fabric as much as possible. It is not only cashmere that we have combined. But also cutting-edge technology and a passion for making clothes.
*Contains 9% cashmere.
Children's comfort is the blueprint.
We created HEATTECH for children by looking directly at the functions that children really need. The skin side of the fabric is made of cotton for a gentle feel. We also choose threads that are comfortable against the skin for the stitching. We use stretchable fibers to allow children to move their bodies to the fullest, and we have also increased the durability of the collar area, taking into account children's unique behavior of stretching the neck wide. We always care about the comfort of our children: it's an important blueprint.
Product Stories
