30% Off Sleep Number c4 Mattress

Get 30% off the Sleep Number c4 Mattress right now at Sleep Number. The queen size drops from $1,899 to $1,329.30. Delivery options add 150-$250. Like all Sleep Number mattresses, it has adjustable comfort levels on each side. But as an upgrade from other models like the c2, it's a taller mattress and has a thicker layer of gel memory foam.