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TheraGel 4" Memory Foam Mattress Topper, King

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 Macy's price tracker

14-day low
$139.80
Sep 13 · Macy's
Best price
$265.62
−43% vs high
14-day high
$466.00
All stores
$466$303$140
Sep 13Sep 26
  • Macy's
Lowest in 14 days: $139.80 at Macy's. Highest: $466.00. Current best is 43% below the 14-day high.

What buyers say

AI summary · 59 reviews

A highly comfortable, supportive mattress topper that delivers cloud-like comfort and effective pressure relief, though a few buyers note a strong initial chemical smell that fades after airing. The overall sentiment is clearly positive.

Liked

  • Cloud-like comfort
  • Excellent body support
  • Cooling gel infusion

Complaints

  • Strong chemical odor
  • Does not fit queen mattress properly

Generated by AI from real customer reviews at Macy's — may miss nuance. Summarized Sep 2026.

About this product

The Comfort Tech 4" TheraGel Memory Foam Mattress Topper is a king-sized mattress overlay designed to enhance comfort and support. It features 4 inches of premium gel memory foam with Active Air Technology for improved airflow and cooler sleep. The topper includes IsoFresh odor-neutralizing technology and is made from foam manufactured in the USA. Its dimensions are 74" long, 76" wide, and 4" thick, weighing 34.5 pounds. Spot cleaning is recommended for maintenance.

  • 4" gel memory foam
  • Active Air Technology
  • IsoFresh odor neutralizing
  • Made in USA
  • King size: 74" x 76"
  • Spot clean only

Based on 59 reviews at Macy's

Read all 59 reviews on Macy's

AskPrice does not host review text. We aggregate the public rating from the retailer and link to the source for full reviews.

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TheraGel 4" Memory Foam Mattress Topper, King — Price History