Alaska TRX+ S3
Alaska TRX+ S3
The Alaska TRX boot features the new SieviSole-X metal-free nail penetration protection, which offers significantly better protection than the older metal-free nail penetration protection structures. Primaloft® is made from 90% recycled fibres from plastic bottles. The boot’s 100% lamb’s wool lining ensures superior insulation against the cold.
Aluminium
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.
Composite X
The product’s penetration resistance meets the requirements of standard EN ISO 20345:2011. Prevents sharp objects from penetrating through the sole. Designed to meet the requirements of the new stricter standard EN 22568-4 (2019) which requires the penetration resistant midsole to be tested with a 3 mm nail with a square tip instead of the 4.5 mm nail required by the current standard. (e.g. construction industry).
Primaloft®
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.
Warm lining
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.
Heat resistance
Safety footwear displaying this symbol can be worn in
hot environments. Sievi’s nitrile rubber sole withstands
temperatures up to 300 °C.
FlexStep®
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.
FlexStep®
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.
Antistatic
Footwear designed with antistatic features, discharges the
body’s static electricity up to tolerances of 100 kΩ - 1000 MΩ.
ESD
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
(IEC 61340-5-1).
Thermo Alu
Sievi ALU insole features a heat-insulating aluminium layer. The aluminium foil of the insole reflects the cold out and the heat inward.
Water repellent
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.
Memory foam ankle protection
The ankle part of the footwear is protected by viscoelastic memory foam which moulds itself to the shape of the wearer’s foot, providing personalised support and softness. Memory foam supports and protects the ankle from shocks.