Alaska GT Roller XL+ S7

Alaska GT Roller XL+ S7

Size
39 - 48
Product code
48-52859-373-71M
Safety class
EN ISO 20345:2022 S7 CI FO HRO SC SR
Toecap
Aluminium
Perforation Resistant Midsole
Steel
Sole material
Double density PU/RU, TractionPro
Upper material
Full grain leather
BOA® lace length
120 cm

In addition to its warm lining, the high-leg Alaska GT Roller+ has a waterproof GORE-TEX membrane. The boot is easy to put on thanks to its unique use of the BOA® Fit System in combination with Velcro on the upper part of the leg. The Sievi TractionPro® friction sole ensures excellent grip and wear resistance. Spacious XL fit.

Aluminium

The toecap protects toes from falling objects and compression. Meets the requirements of the EN ISO 20345:2022 standard: shock resistance is 200 J and resistance to compression 15 000 N. The aluminium toe cap is 50 % lighter than conventional steel toecaps.

Steel

The steel midsole prevents sharp objects from penetrating the sole. Meets the requirements of the EN ISO 20345:2022 standard: resistance to nail penetration is 1100 N.

Resistance to oil and many chemicals

The footwear sole resists oil and many chemicals. The oil resistance of Sievi footwear meets the requirements of the EN ISO 20345:2022 standard.

Antistatic

Antistatic footwear releases in a controlled manner static electricity accumulated in the body. The resistance limits are 100 kΩ - 1000 MΩ.

Shock-absorbing heel

Shock-absorption of the heel is a requirement of EN ISO 20345:2022 and EN ISO 20347:2022 standards: the shock absorption of the footwear must be at least 20 J. In all Sievi footwear the cushioning effect is guaranteed by the use of FlexStep® sole material, see FlexStep® for more information.

Double density PU/RU

The footwear sole consists of polyurethane and rubber. The PU/rubber friction sole features excellent grip and wear resistant properties. The mid-layer of the sole is made of shock absorbing FlexStep® material. Heat resistant up to 300°C.

Warm lining

The footwear is suitable for cold conditions. Depending on the model, the insulating material is lamb’s wool, artificial fur or PrimaLoft® insulation.

Heat resistance

The footwear can be worn in hot environments. Sievi’s nitrile rubber sole withstands temperatures up to 300 °C.

XL-last

Sievi XL ranges. These extra wide styles offer more space and comfort for the wearer. For footwear with XL width fittings see “XL” in the product name.

Ankle protection

The ankle has PORON XRD® support (Lazer Roller High+) or viscoelastic memory foam that moulds itself to the wearer's foot, supporting the ankle and absorbing shocks.

ALU insole

Sievi ALU insole features a heat-insulating aluminium layer. The aluminium foil of the insole reflects the cold out and the heat inward.

ESD

Through its sole construction, ESD footwear provides a safe and controlled method of discharging the body’s static electricity. The resistance limits 100 kΩ - 35 MΩ for the Sievi ESD footwear are stricter than for antistatic footwear (IEC 61340-5-1). Wearing ESD footwear can help you avoid damage to sensitive electronic equipment.

BOA® Fit System

The BOA® Fit System delivers micro-adjustable precision fit, engineered to perform in the toughest conditions. BOA® Fit System consists of three integral parts: a micro-adjustable dial, a super-strong lightweight lace and low friction lace guides.

GORE-TEX

GORE-TEX lining is a unique waterproof lining material that allows the feet to breathe while keeping the moisture out of the footwear. This is the only membrane structure on the market systematically tested for its functionality and comfort.

FlexStep®

The microporous FlexStep® sole material developed by Sievi maintains its excellent shock absorption and flexibility in freezing conditions. The structure of the FlexStep®flexible sole prevents strain on the feet and spine and absorbs shocks. The FlexStep® flexible sole is featured on all Sievi footwear.

TractionPro

Sievi TractionPro® is a sturdy friction sole that gives stronger grip on slippery surfaces. The unique sticky rubber sole, together with the FlexStep® interlayer, developed by Sievi, ensure that the sole remains flexible in all conditions. The Sievi TractionPro® sole's structure and design, with its deep and sharp-edged tread profile, are designed to maximise friction and maintain grip on different surfaces.

UK Design No. 6227543
UK Design No. 6227544

52859 373 71M
POHJA 48 373 MUSTA ORANSSI9
52859 373 71M
POHJA 48 373 MUSTA ORANSSI9
  • Size
    Product
    GTIN
  • 39
    48-52859-373-71M
    6438157233929
  • 40
    48-52859-373-71M
    6438157233936
  • 41
    48-52859-373-71M
    6438157233943
  • 42
    48-52859-373-71M
    6438157233950
  • 43
    48-52859-373-71M
    6438157233967
  • 44
    48-52859-373-71M
    6438157233974
  • 45
    48-52859-373-71M
    6438157233981
  • 46
    48-52859-373-71M
    6438157233998
  • 47
    48-52859-373-71M
    6438157234001
  • 48
    48-52859-373-71M
    6438157234018