The Houston furniture magnate said that if the Seattle Seahawks won the Super Bowl, he would give a full refund to anyone who spent $6,000 or more in the previous two weeks and had their furniture delivered by 5 p.m. Sunday.
Seattle defeated the Denver Broncos 43-8.
Gallery Furniture announced on its website after the loss that Mattress Mack would be giving $7 million in refunds.
Mattress Mack is known for his wild promotions. Last month, he's reported to have lost more than $600,000 over store deals made during the AFC and NFC championship games.