How do I use this SFERRA coupon code at checkout?
This SFERRA promotion ("Free Shipping & Returns in US on Most orders + Sonno Notte Mattress Toppers ship domestically for a flat rate of $50 + More") is an instant deal that does not require entering a promo code. Simply click the "Shop" button on this page to visit SFERRA, add eligible items to your cart, and the discount will be applied automatically at checkout.