SST Fibretech

SST Si

• SST Si is a polypropylene wicking fiber with a silver ion antibacterial treatment. 
• The Si Silver Ion treatment is added to the mass of the polypropylene before it is extruded into fibers and spun into yarn, so it will not wash out over time. 
• Polypropylene is the most hydrophobic fiber available, offering superior wicking and fast drying characteristics.
• We recommend this fiber for technical socks, base layers, and other garments where maximum performance, moisture management, and superior durability are critical.

SST WOOL

• SST Wool is a technical yarn made from Merino wool and polypropylene fibers with Bio NG antibacterial treatment.
• The Bio NG treatment is added to the mass of the polypropylene before it is extruded into fibers and spun into yarn, so it will not wash out over time.
• SST Wool offers the best moisture management properties of polypropylene with the superior insulation characteristics of Merino wool.
• This fiber is excellent for activities where both temperature and moisture management are critical for maximum performance.

SST

• SST is our original technical yarn made from polypropylene fibers with Bio NG antibacterial treatment.
• The Bio NG treatment is added to the mass of the polypropylene before it is extruded into fibers and spun into yarn, so it will not wash out over time.
• This yarn is available in a wide variety of yarn thicknesses to produce very thin socks and garments for hot conditions, as well as thicker socks and garments for lower temperature activities.