l (length) = 19 mm

indicated on the manufacturer's product page

Two external temperature sensor probes

Data sheet/SDS indicates suitable temperature conditions (see manufacturer documentation)

Sikkerhedssko Spider Roller+ S3 HRO ESD str. 36 MIL6106301501 l (length) = 19 mm. The Spider Roller is the perfect choice for situations that require a durable shoe. This shoe comes with an aluminum toe cap and penetration resistant steel midsole. The 3D dry lining, Dual insoles and BOA Fit System lacing mechanism ensure ultimate comfort. The shoe features Sievi's TractionPro friction sole, which offers the best friction properties on the market, regardless of conditions.