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Edemain via Amazon [amazon.com] has Instraella Car Windshield Snow Cover w/ Side Mirror Covers & Anti-Theft Door Flaps (Black) on sale for $19.99 – $8.00 off when you apply promo code RGPASCFC at checkout = $11.99. Shipping is free w/ Prime or on orders $35+.

Note: Amazon promo codes don’t always apply seamlessly. If you run into this issue, try refreshing the page, re-entering the code, or checking after you select a payment method to confirm whether it already applied.