In this advertising video published by Columbia Sportswear, Omni-Heat Reflective is introduced as a technology which reduces body heat loss by reflecting body heat radiation (back to itself) using silvery dots printed on inner surface of jackets or other clothes (similar to a space blanket).
However, I suspect that:
- Body thermal radiation is conserved by most other fabrics as well, without those silver dots.
- The silver dots work to keep the body warmer mainly because they are not/less breathable, not because they reflect radiation.
Has there been any independent scientific experiment (for example using thermal imaging) to see how effective this technology is compared to non-reflective fabrics?