Enter code SAVE40 at checkout and get 40£ Off second pair + Free Shipping£40 off second pair is applied at checkout using the promocode SAVE40. Discount is applied to the item with the lower price. If a till refund is required, both pairs are to be returned to enable a full refund. The full retail price will be charged for the model you retain. One per customer only, not to be used in conjunction with any other offer. No cash-back value, cannot be redeemed for cash. Gift cards, junior frames and accessories are excluded. Other exclusions may apply.