For a limited time, head to GlassesUSA and shop their BOGO free promotion on a huge selection of blue light-blocking glasses. Just use promo code BOGOFREE, and pay as low as $24 per pair. The best part? You’ll also get free shipping on your order.

Note: Excludes premium and contact lenses. Offer applies to frames only.

Here’s one way to save:

Buy 1 Ottoto Federico Beige Glasses (reg. $94) $47, sale price
Buy 1 Ottoto Elvan Tortoise Glasses (reg. $68) $48, sale price
Use BOGOFREE for buy 1, get 1 free
Free shipping
Final Price: $48, or $24 each, when you buy 2

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