Sievi Alaska Thermo BTH XL+ S3 (sizes 36-38)

Sievi Alaska Thermo BTH XL+ S3 winter safety boots combine advanced technology with robust protection to ensure comfort and safety in harsh working conditions. Featuring an integrated Therm-ic heat system with Bluetooth® connectivity, these boots allow precise temperature control and battery monitoring via a smartphone app, providing consistent warmth throughout the day on a single charge. The boots are lined with natural sheep wool and insulated with PrimaLoft® to retain heat efficiently. A lightweight aluminium toecap and steel midsole offer reliable impact and puncture resistance, while the TractionPro® sole ensures superior grip on slippery surfaces. Designed with a spacious XL fit, these boots meet the S3 safety standard (EN ISO 20345:2022), delivering exceptional protection without compromising comfort.

The Therm-ic heat kit with Bluetooth® function, integrated in the shoe, provides warmth for the whole working day with a single charge. Adjust the temperature, check the battery status and select heat settings directly from the Therm-ic app on your smartphone. Sheep wool lining, TractionPro® friction sole, spacious XL fit and PrimaLoft® heat insulation make Alaska Thermo the ultimate winter shoe.

Safety class

S3 EN ISO 20345:2022 S3 SR SC FO CI HRO

Specifications

Toecap: Aluminium
Perforation Resistant Midsole: Steel
Sole material: Double density PU/RU
Lace length: 200 cm

Properties

Downloads

EU DECLARATION OF CONFORMITY (en) 

Alaska Thermo BTH  

Instructions