An ankle boot with warm lining and GripStep® friction sole. The GripStep® sole structure combines the PU and TR rubber grip properties to guarantee maximum grip. The leather upper is decorated with nubuck detailing and stitching. The edge is decorated with split leather. Insoles with aluminium layer keep the warmth inside and the cold outside. Laces and a zipper.
Antistatic footwear releases in a controlled manner static electricity accumulated in the body. The resistance limits are 100 kΩ - 1000 MΩ.
Shock-absorption of the heel is a requirement of EN ISO 20345:2011 and EN ISO 20347:2012 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.
The footwear is suitable for cold conditions. Depending on the model, the insulating material is lamb’s wool, artificial fur or PrimaLoft® insulation.
Models marked with this symbol have a useful zipper.
Sievi ALU insole features a heat-insulating aluminium layer. The aluminium foil of the insole reflects the cold out and the heat inward.
Sievi GripStep® is a unique sole structure that combines the friction properties of polyurethane and TR rubber on the tread to maximise grip. The sole grips firmly on cold and slippery surfaces. Thanks to the dual structure, the sole is also flexible and shock absorbing.