Is there anything worse than smearing wiper blades when it’s raining? Gtechniq G1 is an extremely hydrophobic glass coating. It helps to reduce any contaminants such as bugs, tree sap or ice to bond to the glass. Gtechniq G1 gives unravelled durability up to 30,000 miles or 2 years. The hydrophobic properties improves wet weather visibility, helping to improve safety and reduce eye strain.