Upper Leather: Grain Leather
Laces are made from strong fibers, and the sizes are accordingly of shoes. 
Shoes have fast fasten system, hooks and eyelets are covered by stainless steel.
The outsole is double density injection with great comfort and shock absorption. This outsole can last very long and are suitable for difficult conditions. (TPU/PU)
Insocks are covered with microbial cladding and antistatic foam. They are Sweat-absorbing, washable and removable.