Insulating rubber layer inside and outside,the sponge layer, insulating paper, foam and comfortable and comfortable cotton cloth lining, etc.
Soles with steel bottom, in order to improve the puncture proof performance, bottom up and down in the steel has a comfortable rubber insulation, insulation paper, foam layer on both sides and interlock lining, outsole with rib can prevent slippery.
From uppers surface to openning, between the rubber layer and the interlock lining increased the sponge layer, good insulation, flame retardant, insulating, stays at the same time can improve the wearing comfort.
