Add two pairs into your shopping cart and the pair at a lower price will be $0 automatically. No voucher code is needed. Terms and Conditions>>
1)The free pair includes the frame with SV 1.56 index lenses. The anti-reflective coating is covered as well. Any lens upgrades need to be paid extra. For example, higher index lenses, bifocals/progressive lenses, or advanced/ultimate coating. 2) The free pair comes with either prescription lenses or non-prescription lenses. 3) A shipping fee is needed. 4) Add two pairs to the shopping cart at least.