Structure of safety footwear
Upper: This refers to the upper part of the boot. Traditionally made of durable leather, today?s uppers often feature durability and performance features like tough tech leather to further protect from abrasions. Some work boot styles feature hardwearing, lightweight nylon, a durable fabric often found in more lightweight, warm-temperature footwear.
Foot bed: The foot bed is the inside of the shoe that runs under the foot. Sometimes referred to as the insole, today?s foot beds feature performance advancements to improve comfort and wear.
Midsole: The midsole lies between the foot bed and the outsole and provides shock absorption and support for the wearer. Today?s midsoles are traditionally made from Ethylene Vinyl Acetate (EVA) or Polyurethane (PU). EVA outsoles are soft and flexible but compact over time and wear. While PU outsoles of the past were harder and less comfortable, today?s advances in the manufacturing process are producing direct-inject PU midsoles that provide remarkable durability and comfort.
Outsole: The outsole is a crucial part of industrial and safety footwear, providing stability, traction and protection from on-site slips and falls. Industrial footwear features a variety of materials for outsoles ranging from rubber, PU and TPU. Available outsole types range from oil-, abrasion- and slip-resistant, static-dissipating, puncture-resistant and more.
Shank: The shank is part of the support structure and is located between the insole and outsole, providing rigidity and stability for the boot. Traditionally made of steel, the shank can also be made out of fiberglass and plastic materials.
More visit:- http://www.tradusway.com/safety-footwear/steel-toe -safety-shoes.html