Tracked by Evreward since 2010, Solstice Sunglasses offers coupons, cash back rebates and rewards. Solstice Sunglasses discount coupons are rare, only available once or twice a year, but are often more valuable than similar merchants. Even when Solstice Sunglasses doesn't have a coupon, you can always get up to 15% cash back, and other great rewards, with every purchase.