6pm.com cuts up to 75% off a selection of Oakley and Spy Optic men's and women's sunglasses, with prices starting at $25.99. Plus, all orders receive free shipping.

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A couple best bets:
-- Oakley Women's Warm Up Sunglasses in White for $39.99 (pictured, low by $40)
-- Spy Optic Men's Mercer Sunglasses in Cuban Smoke/Bronze for $46.99 (low by $8)