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Comfort Boost 2.5-inch Memory Foam Mattress Topper, California King

Available at 2 stores

Best price · JCPenney $129.99 $150.00 −13%

Prices as of September 26, 2026, as listed by each retailer — verify the current price on the retailer's site before purchase.

Price history tracked at JCPenney price trackerMacy's price tracker

14-day low
$118.80
Sep 13 · Macy's
Best price
$129.99
−2% vs high
14-day high
$132.00
All stores
$132$125$119
Sep 13Sep 26
  • JCPenney
  • Macy's
Lowest in 14 days: $129.99 at JCPenney. Highest: $129.99. Current best is 0% below the 14-day high.

About this product

The Serta Comfort Boost 2.5-inch Memory Foam Mattress Topper is a dense, responsive foam layer designed to enhance mattress comfort and support. Its contoured structure promotes airflow for temperature regulation, while the 3-lb. density foam provides personalized pressure relief across all sleep positions. The top layer is treated with protective agents to resist stains and odors, and it features no fabric cover, making it easy to spot clean. This mattress pad is available in multiple sizes including Twin, Twin XL, Full, King, and California King, offering a durable, long-lasting upgrade to any bed. It is made in the USA and comes with a limited warranty.

  • 2.5-inch memory foam thickness
  • 3-lb. foam density
  • contoured for airflow
  • no fabric cover
  • spot clean only
  • made in USA

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