Sievi Alaska Roller+/XL+ S3 safety boot

The Sievi Alaska Roller safety boot features FlexEnergy cushioning, which absorbs 55% of kinetic energy and returns it to your stride. FlexEnergy material also provides excellent insulation against cold, bringing unique comfort to winter footwear. The Sievi ALU insole includes a heat-insulating aluminum layer. The aluminum film in the insole reflects cold outward and warmth inward. The ankle area of the footwear is equipped with viscoelastic memory foam that conforms to the wearer’s foot, supports the ankle, and cushions impacts directed at it. With the Boa® tightening system, you can adjust the safety shoes for a perfect fit that lasts all day. High-cut ESD safety footwear.

Sizes 36–38: regular fit, sizes 39–47: XL fit. The Sievi XL fit is wider than the regular fit, giving feet and toes more room.

Safety rating: EN ISO 20345: S3 SRC CI HRO

Toe cap: Aluminum
Penetration-resistant midsole: Steel
Sole material: Dual-layer PU/RU. The polyurethane/rubber traction sole offers excellent grip and wear resistance. The midsole is made of shock-absorbing FlexStep® material. Heat resistant up to 300 °C.
Upper material: PU leather, split leather, and textile, water-repellent