Improve your sleep experience with Costco’s premium mattress toppers, designed to add a luxurious layer of comfort and support while extending the life of your mattress. Choose from contouring memory foam toppers, plush fiber-fill pads, cooling gel-infused foam, soft down, or fiber-fill that relieve pressure points, improve spinal alignment, and reduce motion transfer. Our top-rated selection features advanced cooling technology and highly breathable, hypoallergenic materials to keep your sleep environment clean and temperature-regulated. Available in various thickness levels (from 2 to 4 inches) across all bed sizes—including Twin, Full, Queen, King, and California King—Costco mattress toppers offer a cost-effective way to revitalize your sleep.