Treyca Lenses

Manufactured to Standard: BS EN ISO 12312-1: 2013 (280nm-780nm)

 Our lenses our crafted using a plastic polymer CR39,  allyl diglycol carbonate (ADC)

 The lenses provide 100% UVA and UVB protection

 With attention to detail the lenses are manufactured using a 4 stage process:

1. The CR39 material is added a layer at a time until the perfect thickness is achieved.

2. They then go through a process of solidifying the lenses, followed by a thorough cleaning process.

3. The lenses are then cut down to the correct size and then followed by the shaping of the lenses to provide the perfect curve.

4. Every single one our of our lenses then go through our quality assurance process which involves being manually checked by hand.