Groupon cuts up to 67% off a selection of Ray-Ban unisex sunglasses, as listed below. That beats our mention from yesterday, which saw sunglasses discounted up to 63%. Plus, all orders bag free shipping. Deal ends May 19. The sunglasses:

• Ray-Ban Unisex RB4242 6034/2Y Violet/Brown Sunglasses for $74.99 (low by $5)
• Ray-Ban Unisex RB4242 76430 Red/Silver Sunglasses for $74.99 (pictured, low by $5)
• Ray-Ban Unisex RB4199 601/71 Black/Green Sunglasses for $84.99 (low by $5)
• Ray-Ban Unisex RB4224 646/55 Silver/Mirror Sunglasses for $94.99 (low by $3)
• Ray-Ban Unisex RB4207 601S9A Black/Grey Sunglasses for $94.99 (low by $3)