Every aspect of the Alaska shoes has been especially designed for cold conditions. Lamb's wool lining, Primaloft® insulation and high-friction rubber soles which retain their flexibility even in extreme cold make Alaska the ultimate winter shoe.
The toecap protects toes from falling objects and compression. Meets the requirements of the EN ISO 20345:2011 standard: shock resistance is 200 J and resistance to compression 15000 N. The aluminium toecap is 50 % lighter than traditional steel toecaps.
The steel midsole, prevents sharp objects from penetrating through the sole. Meets the requirements of the EN ISO 20345:2011 standard: resistance to nail penetration is 1100 N.
The footwear features thermally insulating and breathable Primaloft fi bre. Primaloft fi bres improve the thermal
insulation by binding more air molecules between the body and the outside air.
Footwear displaying this symbol can be worn in cold
environments. The material keeping the cold out is either lamb’s
wool or artifi cial fur. Additionally, some styles are lined with
Thinsulate™ fi ber.
Double density PU/RU
The footwear sole consists of polyurethane and rubber. The PU/
rubber friction sole features excellent grip- and wear resistant
properties and being heat resistant up to 300 °C. The mid-layer
of the sole is of shock absorbing FlexStep® material.
Safety footwear displaying this symbol can be worn in
hot environments. Sievi’s nitrile rubber sole withstands
temperatures up to 300 °C.
The shock-absorbing heel area protects the feet and the skeletal system against stress. The product meets the requirements of EN ISO 20345:2011 and EN ISO 20347:2012: the shock absorption capacity of the footwear is at least 20 J. The cushioning effect is guaranteed by the use of FlexStep® sole material in all Sievi footwear.
The microporous FlexStep® sole material developed by Sievi maintains its excellent shock absorption and flexibility in freezing conditions and creates excellent friction on slippery surfaces. The construction of the FlexStep® flexible sole eliminates stress and shocks to the feet and spine. The FlexStep® flexible sole is featured on all Sievi footwear.
Footwear designed with antistatic features, discharges the
body’s static electricity up to tolerances of 100 kΩ - 1000 MΩ.
Through its sole construction, ESD footwear provides a safe and
controlled method of discharging the body’s static electricity.
The tolerances for the resistance of Sievi footwear are stricter
(100 kΩ-35 MΩ) than for ordinary antistatic footwear
Sievi ALU insole features a heat-insulating aluminium layer. The aluminium foil of the insole reflects the cold out and the heat inward.
The upper material used in this footwear is water repellent. Its water resistance meets the requirements of the EN ISO 20345:2011 standard.
Resistance to oil and many chemicals
Sievi’s sole resists oil and many chemicals. The oil resistance of Sievi footwear meets the requirements of the EN ISO 20345:2011 standard.