These standard references are directly from the manufacturer's description

and durable (according to manufacturer's specifications)

Interface: 1 switching output

Vandtæthed/overflade: Overdelen er vandafvisende

Part Number: 497A

Indersål udtagbar t/ESD sko Str.45 vask i hånd m/stødpude MIL2006101414 These standard references are directly. Heel and ball shock absorbing pads in the insoles reduce shock and stress. The material of the shock absorbing pads, PORON, is extremely durable and retains its properties without falling apart, even under hard daily use. The Sievi Dual Comfort insoles are available in a normal and a wide XL model. The insoles comply with ESD standards. Hand wash only.