Seamless, long-sleeved men t-shirt that provides thermal comfort during autumn and spring outdoor activities. Great for extreme conditions. The lack of side seams prevents chafing, improves the appearance and comfort of wearing. Ventilation zones in this model have been improved – areas exposed to hypothermia have been properly heated, and areas characterized by greater sweating have gained moisture-draining zones. The Super Dry-Dual material used ensures exceptional breathability of the underwear, and silver ions ensure a high level of hygiene.

In the laboratory tests carried out, the material used for the production of the RIFFE line recorded a high value of the thermal resistance coefficient, which confirms the material’s ability to stop heat loss.