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3 Inch King Mattress Topper

Transform your sleep experience with a 3-inch king mattress topper, designed to bring an extra layer of comfort and support to your bed. Perfect for rejuvenating an older mattress or adding plushness to a new one, these toppers provide an enhanced sleeping surface that conforms to your body for a more restful night's sleep. Whether you prefer memory foam, gel-infused options, or hypoallergenic materials, there's a variety of choices to suit your personal preferences and needs. Explore the possibilities of waking up refreshed and ready to tackle the day with the perfect addition to your bedroom sanctuary.

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  1. Bestier - 3" Cooling Gel Memory Foam Mattress Topper - King

    SKU: J39TG4JLSL

    Product Description

    A ventilated gel memory foam topper in white offers cooling comfort, pressure relief, and medium firmness.
    See all Mattresses
    Your price for this item is $129.99

  2. Bestier - 3 Inch Egg Crate Memory Foam Mattress Topper, Cooling Gel Infused Foam Mattress Topper for Pressure Relief Bed Topper - King

    SKU: J39TG4JLZK

    Product Description

    An egg crate memory foam topper with cooling gel and lavender scent for pressure relief and restful sleep.
    See all Mattresses
    Your price for this item is $112.99
    Save $37
    The previous price was $149.99

  3. Bestier - 3 Inch 5-Zone Memory Foam Mattress Topper, Gel Infused Foam Mattress Topper for Pressure Relief Bed Topper - King

    SKU: J39TG4JLQ4

    Product Description

    A gel-infused memory foam topper with 5-zone support and cooling channels for enhanced comfort and airflow.
    See all Mattresses
    Your price for this item is $109.99
    Save $40
    The previous price was $149.99

  4. Dyonery - King Size Firm Twin Mattress Topper 3 Inch High Density Foam, Non-Slip, Removable Washable Cover - Gray

    SKU: JJGT9CHSGW

    Product Description

    A gray high-density memory foam topper offering firm support, pressure relief, and a removable washable cover.
    See all Mattress Toppers & Pads
    Your price for this item is $122.00

  5. Dyonery - 3 in high-density foam mattress pads, detachable bedspreads, suitable for bedrooms and dormitories, King size - White

    SKU: JJGT9CPZ5T

    Product Description

    A white high-density foam mattress topper with extra firm support and a detachable bedspread for comfort.
    See all Mattresses
    Your price for this item is $95.00
    Save $15
    The previous price was $110.00
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In-store pricing may vary. Prices and offers are subject to change. © 2026 Best Buy. All rights reserved. BEST BUY, the BEST BUY logo, the tag design, and MY BEST BUY are trademarks of Best Buy and its affiliated companies.