Full wrap made in 3d without no seams, silver fiber mixed with technical fibres and fireproof. The Union silver fiber blended yarns create, together with the particular realization, an optimal microclimate allowing you to keep you dry at a constant temperature. Technical/physical characteristics, as well as ergonomics, softness and comfort, are: anti-bacterial, Hygroscopicity, breathability, body temperature control, thermal insulation, water repellency and antistatic