waterproof

Demar Waterproof system is a modern solution thanks to which footwear is completely waterproof. Best quality waterproof leather (nubuck) was used in the boot-tops, and the inside of the footwear is made of waterproof and vapour permeable membrane. It is a polytetrafluoroethylene membrane (PTFE), laminated and reinforced with spacer fabric (polyamide), which is used as the lining. This combination is characterized by a very well hygienic parameters and durability.

 

Basic hygienic parameters of Demar Waterproof system:

  • water vapour permeability – not less than 2.0 mg/ cm²h   (tested acc. to PN-EN ISO 20344:2012),
  • water vapour coefficient – not less than 20 mg/cm² (tested acc. to PN-EN ISO 20344:2012),
  • watertightness – not less than 10 m 10 m H2O (tested acc. to PN-EN 20811:1997).

Basic durability parameters of Demar Waterproof system:

  • tear strength, not less than 15N (acc. to PN-EN ISO 4674-1 2005),
  • resistance to dry friction –  not less than up to 25 600 cycles,
  • resistance to wet friction – not less than 12800 cycles  (acc. to PN-EN ISO 20344:2012).